diff --git a/css/form-sdk/form.css b/css/form-sdk/form.css
index 8717a8dae..0de671705 100644
--- a/css/form-sdk/form.css
+++ b/css/form-sdk/form.css
@@ -55,3 +55,25 @@
 .form_interval_horizontal > div{
 	margin-right: 8px;
 }
+
+.form-compound-fieldset{
+	padding: 8px;
+	border-radius: 10px;
+	border: 1px dashed lightgrey;
+}
+
+
+.form-layout-row{
+	display: flex;
+	flex-direction: row;
+}
+.form-layout-column{
+	margin: 10px;
+}
+.form-layout-column:first-child{
+	margin-left: 0px;
+}
+.form-layout-column:last-child{
+	margin-right: 0px;
+}
+
diff --git a/lib/composer/autoload_classmap.php b/lib/composer/autoload_classmap.php
index da3924076..76538d12b 100644
--- a/lib/composer/autoload_classmap.php
+++ b/lib/composer/autoload_classmap.php
@@ -400,6 +400,7 @@ return array(
     'Combodo\\iTop\\DesignDocument' => $baseDir . '/core/designdocument.class.inc.php',
     'Combodo\\iTop\\DesignElement' => $baseDir . '/core/designdocument.class.inc.php',
     'Combodo\\iTop\\FormImplementation\\Controller\\TestController' => $baseDir . '/sources/FormImplementation/Controller/TestController.php',
+    'Combodo\\iTop\\FormImplementation\\Dto\\CountDto' => $baseDir . '/sources/FormImplementation/Dto/CountDto.php',
     'Combodo\\iTop\\FormImplementation\\Dto\\ObjectSearchDto' => $baseDir . '/sources/FormImplementation/Dto/ObjectSearchDto.php',
     'Combodo\\iTop\\FormImplementation\\Helper\\FormHelper' => $baseDir . '/sources/FormImplementation/Helper/FormHelper.php',
     'Combodo\\iTop\\FormImplementation\\Helper\\SelectDataProvider' => $baseDir . '/sources/FormImplementation/Helper/SelectDataProvider.php',
@@ -412,9 +413,10 @@ return array(
     'Combodo\\iTop\\FormSDK\\Service\\FormFactoryBuilderTrait' => $baseDir . '/sources/FormSDK/Service/FormFactoryBuilderTrait.php',
     'Combodo\\iTop\\FormSDK\\Service\\FormManager' => $baseDir . '/sources/FormSDK/Service/FormManager.php',
     'Combodo\\iTop\\FormSDK\\Symfony\\SymfonyBridge' => $baseDir . '/sources/FormSDK/Symfony/SymfonyBridge.php',
+    'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Compound\\FieldsetType' => $baseDir . '/sources/FormSDK/Symfony/Type/Compound/FieldsetType.php',
     'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Compound\\FormObjectType' => $baseDir . '/sources/FormSDK/Symfony/Type/Compound/FormObjectType.php',
+    'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\AbstractLayoutType' => $baseDir . '/sources/FormSDK/Symfony/Type/Layout/LayoutType.php',
     'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\ColumnType' => $baseDir . '/sources/FormSDK/Symfony/Type/Layout/ColumnType.php',
-    'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\FieldsetType' => $baseDir . '/sources/FormSDK/Symfony/Type/Layout/FieldsetType.php',
     'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\RowType' => $baseDir . '/sources/FormSDK/Symfony/Type/Layout/RowType.php',
     'Combodo\\iTop\\Form\\Field\\AbstractSimpleField' => $baseDir . '/sources/Form/Field/AbstractSimpleField.php',
     'Combodo\\iTop\\Form\\Field\\BlobField' => $baseDir . '/sources/Form/Field/BlobField.php',
diff --git a/lib/composer/autoload_static.php b/lib/composer/autoload_static.php
index 3fe907901..4024b5051 100644
--- a/lib/composer/autoload_static.php
+++ b/lib/composer/autoload_static.php
@@ -809,6 +809,7 @@ class ComposerStaticInit7f81b4a2a468a061c306af5e447a9a9f
         'Combodo\\iTop\\DesignDocument' => __DIR__ . '/../..' . '/core/designdocument.class.inc.php',
         'Combodo\\iTop\\DesignElement' => __DIR__ . '/../..' . '/core/designdocument.class.inc.php',
         'Combodo\\iTop\\FormImplementation\\Controller\\TestController' => __DIR__ . '/../..' . '/sources/FormImplementation/Controller/TestController.php',
+        'Combodo\\iTop\\FormImplementation\\Dto\\CountDto' => __DIR__ . '/../..' . '/sources/FormImplementation/Dto/CountDto.php',
         'Combodo\\iTop\\FormImplementation\\Dto\\ObjectSearchDto' => __DIR__ . '/../..' . '/sources/FormImplementation/Dto/ObjectSearchDto.php',
         'Combodo\\iTop\\FormImplementation\\Helper\\FormHelper' => __DIR__ . '/../..' . '/sources/FormImplementation/Helper/FormHelper.php',
         'Combodo\\iTop\\FormImplementation\\Helper\\SelectDataProvider' => __DIR__ . '/../..' . '/sources/FormImplementation/Helper/SelectDataProvider.php',
@@ -821,9 +822,10 @@ class ComposerStaticInit7f81b4a2a468a061c306af5e447a9a9f
         'Combodo\\iTop\\FormSDK\\Service\\FormFactoryBuilderTrait' => __DIR__ . '/../..' . '/sources/FormSDK/Service/FormFactoryBuilderTrait.php',
         'Combodo\\iTop\\FormSDK\\Service\\FormManager' => __DIR__ . '/../..' . '/sources/FormSDK/Service/FormManager.php',
         'Combodo\\iTop\\FormSDK\\Symfony\\SymfonyBridge' => __DIR__ . '/../..' . '/sources/FormSDK/Symfony/SymfonyBridge.php',
+        'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Compound\\FieldsetType' => __DIR__ . '/../..' . '/sources/FormSDK/Symfony/Type/Compound/FieldsetType.php',
         'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Compound\\FormObjectType' => __DIR__ . '/../..' . '/sources/FormSDK/Symfony/Type/Compound/FormObjectType.php',
+        'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\AbstractLayoutType' => __DIR__ . '/../..' . '/sources/FormSDK/Symfony/Type/Layout/LayoutType.php',
         'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\ColumnType' => __DIR__ . '/../..' . '/sources/FormSDK/Symfony/Type/Layout/ColumnType.php',
-        'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\FieldsetType' => __DIR__ . '/../..' . '/sources/FormSDK/Symfony/Type/Layout/FieldsetType.php',
         'Combodo\\iTop\\FormSDK\\Symfony\\Type\\Layout\\RowType' => __DIR__ . '/../..' . '/sources/FormSDK/Symfony/Type/Layout/RowType.php',
         'Combodo\\iTop\\Form\\Field\\AbstractSimpleField' => __DIR__ . '/../..' . '/sources/Form/Field/AbstractSimpleField.php',
         'Combodo\\iTop\\Form\\Field\\BlobField' => __DIR__ . '/../..' . '/sources/Form/Field/BlobField.php',
diff --git a/lib/composer/installed.php b/lib/composer/installed.php
index 2392d0ca3..7b5c6f143 100644
--- a/lib/composer/installed.php
+++ b/lib/composer/installed.php
@@ -3,7 +3,7 @@
         'name' => 'combodo/itop',
         'pretty_version' => 'dev-develop',
         'version' => 'dev-develop',
-        'reference' => '75fde4c9a3fb4b46ae8765e961d0f590bdad199b',
+        'reference' => '00f241e4cf314d4190bedeba80de9ec12461b958',
         'type' => 'project',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
@@ -22,7 +22,7 @@
         'combodo/itop' => array(
             'pretty_version' => 'dev-develop',
             'version' => 'dev-develop',
-            'reference' => '75fde4c9a3fb4b46ae8765e961d0f590bdad199b',
+            'reference' => '00f241e4cf314d4190bedeba80de9ec12461b958',
             'type' => 'project',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),
diff --git a/sources/FormImplementation/Dto/CountDto.php b/sources/FormImplementation/Dto/CountDto.php
new file mode 100644
index 000000000..b98292ccf
--- /dev/null
+++ b/sources/FormImplementation/Dto/CountDto.php
@@ -0,0 +1,34 @@
+<?php
+
+namespace Combodo\iTop\FormImplementation\Dto;
+
+use ArrayAccess;
+
+class CountDto implements ArrayAccess
+{
+	public function __construct(
+		public int $count1 = 11,
+		public int $count2 = 22,
+		public int $count3 = 33,
+	) {
+	}
+
+	public function offsetExists($offset) : bool
+	{
+		return property_exists($this, $offset);
+	}
+
+	public function offsetGet($offset) : mixed
+	{
+		return $this->$offset;
+	}
+	public function offsetSet($offset, $value) : void
+	{
+		$this->$offset = $value;
+	}
+
+	public function offsetUnset($offset) : void
+	{
+		unset($this->$offset);
+	}
+}
diff --git a/sources/FormImplementation/Helper/FormHelper.php b/sources/FormImplementation/Helper/FormHelper.php
index 3dd8486c6..eed12474f 100644
--- a/sources/FormImplementation/Helper/FormHelper.php
+++ b/sources/FormImplementation/Helper/FormHelper.php
@@ -3,6 +3,9 @@
 namespace Combodo\iTop\FormImplementation\Helper;
 
 use Combodo\iTop\Controller\AbstractAppController;
+use Combodo\iTop\FormImplementation\Dto\CountDto;
+use Combodo\iTop\FormSDK\Field\FormFieldDescription;
+use Combodo\iTop\FormSDK\Field\FormFieldTypeEnumeration;
 use Combodo\iTop\FormSDK\Service\FormManager;
 use DateInterval;
 use DateTime;
@@ -30,6 +33,23 @@ class FormHelper
 		// create a factory
 		$oFormFactory = $oFormManager->CreateFactory();
 
+		// form data
+		$aData = [
+			'city' => 'Autun',
+			'tel' => '+33(6) 35 57 48 77',
+			'birthday' => new DateTime('1979/06/27'),
+			'count' => 10,
+			'counts' =>  ['count1' => 10, 'count2' => 20, 'count3' => 30],
+			'counts2' => new CountDto(),
+			'interval' => ['days' => '12', 'hours' => '13', 'years' => '10', 'months' => '6', 'minutes' => '0', 'seconds' => '0', 'weeks' => '3'],
+			'blog' => 'Your <b>story</b>',
+			'notify' => true,
+			'language' => 'FR FR',
+			'mode' => '1',
+			'options' => ['0', '2','4']
+		];
+		$oFormFactory->SetData($aData);
+
 		// add X person forms...
 		for($i = 0 ; $i < self::$PERSON_COUNT ; $i++){
 
@@ -37,7 +57,7 @@ class FormHelper
 			$oPerson = MetaModel::GetObject('Person', $i+1);
 
 			// create object adapter
-			$oObjectPlugin = $oFormFactory->CreateObjectAdapter($oPerson, true);
+			$oObjectPlugin = $oFormFactory->CreateObjectAdapter($oPerson, false);
 			$oObjectPlugin->AddAttribute('name');
 			$oObjectPlugin->AddAttribute('mobile_phone');
 		}
@@ -47,27 +67,51 @@ class FormHelper
 			'label' => 'Ma ville',
 			'help' => 'This is where you live',
 			'constraints' => new Length(['min' => 3])
-		], 'Autun');
+		]);
 
 		// tel - text with pattern
 		$oFormFactory->AddTextField('tel', [
 			'label' => 'Tel',
 			'constraints' => new Regex(['pattern' => '/\+33\(\d\) \d\d \d\d \d\d \d\d/'], null, '+{33}(0) 00 00 00 00'),
 			'required' => false
-		], '+33(6) 35 57 48 77');
+		]);
 
 		// birthday - date
 		$oFormFactory->AddDateField('birthday', [
 			'label' => 'Anniversaire',
 			'widget' => 'single_text',
 			'required' => false
-		], new DateTime('1979/06/27'));
+		]);
 
 		// count - number
 		$oFormFactory->AddNumberField('count', [
 			'label' => 'Compteur',
 			'required' => false
-		], 10);
+		]);
+
+		// counts - fieldset
+		$oCount1 = new FormFieldDescription('count1', FormFieldTypeEnumeration::NUMBER, []);
+		$oCount2 = new FormFieldDescription('count2', FormFieldTypeEnumeration::NUMBER, []);
+		$oCount3 = new FormFieldDescription('count3', FormFieldTypeEnumeration::NUMBER, []);
+		$oFormFactory->AddFieldSet('counts', [
+			'label' => 'Compteurs',
+			'required' => false,
+			'fields' => [
+				$oCount1, $oCount2, $oCount3
+			]
+		]);
+
+		// counts - fieldset alternative
+		$oCount1 = new FormFieldDescription('count1', FormFieldTypeEnumeration::NUMBER, []);
+		$oCount2 = new FormFieldDescription('count2', FormFieldTypeEnumeration::NUMBER, []);
+		$oCount3 = new FormFieldDescription('count3', FormFieldTypeEnumeration::NUMBER, []);
+		$oFormFactory->AddFieldSet('counts2', [
+			'label' => 'Compteurs',
+			'required' => false,
+			'fields' => [
+				$oCount1, $oCount2, $oCount3 // OR $oData
+			]
+		]);
 
 		// interval - duration
 		$oFormFactory->AddDurationField('interval', [
@@ -80,24 +124,24 @@ class FormHelper
 			'attr' => [
 				'class' => 'form_interval_horizontal'
 			]
-		], ['days' => '12', 'hours' => '13', 'years' => '10', 'months' => '6', 'minutes' => '0', 'seconds' => '0', 'weeks' => '3']);
+		]);
 
 		// ready
 		$oFormFactory->AddSwitchField('notify', [
 			'label' => 'Veuillez m\'avertir en cas de changement',
-		], true);
+		]);
 
 		// blog - date
 		$oFormFactory->AddAreaField('blog', [
 			'label' => 'Blog',
 			'required' => false
-		], 'Your story');
+		]);
 
 		// language - select with static data
 		$oFormFactory->AddSelectField('language', [
 			'label' => 'Ma langue',
 			'choices' => SelectDataProvider::GetApplicationLanguages()
-		], 'FR FR');
+		]);
 
 		// dog - select with ajax API
 		$oFormFactory->AddSelectAjaxField('dog', [
@@ -136,10 +180,10 @@ class FormHelper
 			'label_attr' => [
 				'class' => 'radio-inline'
 			]
-		], '1');
+		]);
 
 		// options - select with static data
-		$oFormFactory->AddSelectField('option', [
+		$oFormFactory->AddSelectField('options', [
 			'label' => 'Mes options',
 			'choices' => SelectDataProvider::GetOptions(),
 			'expanded' => true,
@@ -147,7 +191,7 @@ class FormHelper
 			'label_attr' => [
 				'class' => 'checkbox-inline'
 			]
-		], ['0', '2','4']);
+		]);
 
 		// layout description
 		$oFormFactory->SetLayoutDescription([
diff --git a/sources/FormSDK/Field/FormFieldTypeEnumeration.php b/sources/FormSDK/Field/FormFieldTypeEnumeration.php
index 5ccc86fbf..8a2818872 100644
--- a/sources/FormSDK/Field/FormFieldTypeEnumeration.php
+++ b/sources/FormSDK/Field/FormFieldTypeEnumeration.php
@@ -33,8 +33,8 @@ enum FormFieldTypeEnumeration : string
 	case DATE = 'DATE';
 	case SELECT = 'SELECT';
 	case SWITCH = 'SWITCH';
-	case DB_OBJECT = 'DB_OBJECT';
 	case DURATION = 'DURATION';
+	case FIELDSET = 'FIELDSET';
 
 	/**
 	 * Return available options.
@@ -44,7 +44,7 @@ enum FormFieldTypeEnumeration : string
 	public function GetAvailableOptions() : array
 	{
 		// global options
-		$aOptions = ['required', 'disabled', 'attr', 'label', 'label_attr', 'help'];
+		$aOptions = ['required', 'disabled', 'attr', 'label', 'label_attr', 'help', 'inherit_data'];
 
 		// specific options
 		$test =  match ($this) {
@@ -60,7 +60,7 @@ enum FormFieldTypeEnumeration : string
 			FormFieldTypeEnumeration::DURATION => array_merge($aOptions,
 				['input', 'with_minutes', 'with_seconds', 'with_weeks', 'with_days']
 			),
-			FormFieldTypeEnumeration::DB_OBJECT => array_merge($aOptions,
+			FormFieldTypeEnumeration::FIELDSET => array_merge($aOptions,
 				['fields']
 			),
 			default => $aOptions,
diff --git a/sources/FormSDK/Service/FactoryAdapter/FormFactoryObjectAdapter.php b/sources/FormSDK/Service/FactoryAdapter/FormFactoryObjectAdapter.php
index b86f95a56..6cbe7f870 100644
--- a/sources/FormSDK/Service/FactoryAdapter/FormFactoryObjectAdapter.php
+++ b/sources/FormSDK/Service/FactoryAdapter/FormFactoryObjectAdapter.php
@@ -192,9 +192,9 @@ final class FormFactoryObjectAdapter implements FormFactoryAdapterInterface
 		}
 
 		if($this->bGroup){
-			$oGroupDescriptions = new FormFieldDescription($this->GetIdentifier(), FormFieldTypeEnumeration::DB_OBJECT, [
+			$oGroupDescriptions = new FormFieldDescription($this->GetIdentifier(), FormFieldTypeEnumeration::FIELDSET, [
 				'fields' => $aFieldsDescriptions,
-				'label' => $this->GetLabel()
+				'label' => $this->GetLabel(),
 			]);
 			return [$this->GetIdentifier() => $oGroupDescriptions];
 		}
diff --git a/sources/FormSDK/Service/FormFactory.php b/sources/FormSDK/Service/FormFactory.php
index b5b07dc48..d0440c1cf 100644
--- a/sources/FormSDK/Service/FormFactory.php
+++ b/sources/FormSDK/Service/FormFactory.php
@@ -49,8 +49,11 @@ class FormFactory
 	/** @var array $aFieldsDescriptions form types descriptions */
 	private array $aFieldsDescriptions = [];
 
-	/** @var array $aFieldsData form data */
-	private array $aFieldsData = [];
+	/** @var mixed $oFieldsData form data */
+	private mixed $oFieldsData = [];
+
+	/** @var array $aLayoutDecription description of the layout */
+	private array $aLayoutDecription;
 
 	/** builder */
 	use FormFactoryBuilderTrait;
@@ -70,27 +73,34 @@ class FormFactory
 	}
 
 	/**
-	 * Return fields descriptions and data arrays.
+	 * Return fields descriptions.
 	 *
-	 * @return array{descriptions:array, data:array}
+	 * @return array{fields_descriptions:array, layout_description:array}
 	 */
-	public function GetFieldsDescriptionsAndData() : array
+	public function GetFieldsDescriptions() : array
 	{
 		// prepare data
-		$aResult = [
-			'descriptions' => $this->aFieldsDescriptions,
-			'data' => $this->aFieldsData,
-		];
+		$aResult = $this->aFieldsDescriptions;
+
 
 		// merge each adapter data...
 		foreach ($this->GetAllAdapters() as $oAdapter){
-			$aResult['descriptions'] = array_merge($aResult['descriptions'], $oAdapter->GetFieldsDescriptions());
-			$aResult['data'] = array_merge($aResult['data'], $oAdapter->GetFieldsData());
+			$aResult = array_merge($aResult, $oAdapter->GetFieldsDescriptions());
 		}
 
 		return $aResult;
 	}
 
+	/**
+	 * Return layout description.
+	 *
+	 * @return array
+	 */
+	public function GetLayoutDescription() : array
+	{
+		return $this->aLayoutDecription;
+	}
+
 	/**
 	 * Create an object adapter.
 	 *
@@ -130,6 +140,43 @@ class FormFactory
 		return $this->aAdapters;
 	}
 
+	/**
+	 * Set layout description.
+	 *
+	 * @param array $aLayoutDescription
+	 *
+	 * @return $this
+	 */
+	public function SetLayoutDescription(array $aLayoutDescription)
+	{
+		$this->aLayoutDecription = $aLayoutDescription;
+		return $this;
+	}
+
+	/**
+	 * @param mixed $oData
+	 *
+	 * @return void
+	 */
+	public function SetData(mixed $oData) : void
+	{
+		$this->oFieldsData = $oData;
+	}
+
+	/***
+	 * @return array
+	 */
+	public function GetData() : mixed
+	{
+		$aData = $this->oFieldsData;
+
+		foreach ($this->GetAllAdapters() as $adapter){
+			$aData = array_merge($aData, $adapter->GetFieldsData());
+		}
+
+		return $aData;
+	}
+
 	/**
 	 * Create form.
 	 *
@@ -138,8 +185,8 @@ class FormFactory
 	 */
 	public function CreateForm(?string $sName = null) : mixed
 	{
-		['descriptions' => $aDescriptions, 'data' => $aData] = $this->GetFieldsDescriptionsAndData();
-		return $this->oSymfonyBridge->CreateForm($aDescriptions, $aData, $sName);
+		$aFieldsDescriptions = $this->GetFieldsDescriptions();
+		return $this->oSymfonyBridge->CreateForm($aFieldsDescriptions, $this->GetData(), $sName, $this->GetLayoutDescription());
 	}
 
 }
\ No newline at end of file
diff --git a/sources/FormSDK/Service/FormFactoryBuilderTrait.php b/sources/FormSDK/Service/FormFactoryBuilderTrait.php
index cc621be25..e0779fa23 100644
--- a/sources/FormSDK/Service/FormFactoryBuilderTrait.php
+++ b/sources/FormSDK/Service/FormFactoryBuilderTrait.php
@@ -16,11 +16,10 @@ trait FormFactoryBuilderTrait
 	 *
 	 * @param string $sKey
 	 * @param array $aOptions
-	 * @param mixed $oData
 	 *
 	 * @return $this
 	 */
-	public function AddTextField(string $sKey, array $aOptions, mixed $oData = null) : FormFactory
+	public function AddTextField(string $sKey, array $aOptions) : FormFactory
 	{
 		// test widget for regex constraint
 		if(array_key_exists('constraints', $aOptions)){
@@ -40,7 +39,6 @@ trait FormFactoryBuilderTrait
 		}
 
 		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::TEXT, $aOptions);
-		$this->aFieldsData[$sKey] = $oData;
 
 		return $this;
 	}
@@ -50,16 +48,12 @@ trait FormFactoryBuilderTrait
 	 *
 	 * @param string $sKey
 	 * @param array $aOptions
-	 * @param mixed $oData
 	 *
 	 * @return $this
 	 */
-	public function AddNumberField(string $sKey, array $aOptions, mixed $oData = null) : FormFactory
+	public function AddNumberField(string $sKey, array $aOptions) : FormFactory
 	{
-//		$aOptions['property_path'] = $sKey;
-
 		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::NUMBER, $aOptions);
-		$this->aFieldsData[$sKey] = $oData;
 
 		return $this;
 	}
@@ -69,11 +63,10 @@ trait FormFactoryBuilderTrait
 	 *
 	 * @param string $sKey
 	 * @param array $aOptions
-	 * @param mixed $oData
 	 *
 	 * @return $this
 	 */
-	public function AddAreaField(string $sKey, array $aOptions, mixed $oData = null) : FormFactory
+	public function AddAreaField(string $sKey, array $aOptions) : FormFactory
 	{
 		$aOptions = array_merge([
 			'attr' => [
@@ -83,7 +76,6 @@ trait FormFactoryBuilderTrait
 		], $aOptions);
 
 		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::AREA, $aOptions);
-		$this->aFieldsData[$sKey] = $oData;
 
 		return $this;
 	}
@@ -93,14 +85,12 @@ trait FormFactoryBuilderTrait
 	 *
 	 * @param string $sKey
 	 * @param array $aOptions
-	 * @param mixed $oData
 	 *
 	 * @return $this
 	 */
-	public function AddDateField(string $sKey, array $aOptions, mixed $oData = null) : FormFactory
+	public function AddDateField(string $sKey, array $aOptions) : FormFactory
 	{
 		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::DATE, $aOptions);
-		$this->aFieldsData[$sKey] = $oData;
 
 		return $this;
 	}
@@ -110,14 +100,12 @@ trait FormFactoryBuilderTrait
 	 *
 	 * @param string $sKey
 	 * @param array $aOptions
-	 * @param mixed $oData
 	 *
 	 * @return $this
 	 */
-	public function AddDurationField(string $sKey, array $aOptions, mixed $oData = null) : FormFactory
+	public function AddDurationField(string $sKey, array $aOptions) : FormFactory
 	{
 		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::DURATION, $aOptions);
-		$this->aFieldsData[$sKey] = $oData;
 
 		return $this;
 	}
@@ -127,14 +115,12 @@ trait FormFactoryBuilderTrait
 	 *
 	 * @param string $sKey
 	 * @param array $aOptions
-	 * @param mixed $oData
 	 *
 	 * @return $this
 	 */
-	public function AddSelectField(string $sKey, array $aOptions, mixed $oData = null) : FormFactory
+	public function AddSelectField(string $sKey, array $aOptions) : FormFactory
 	{
 		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::SELECT, $aOptions);
-		$this->aFieldsData[$sKey] = $oData;
 
 		return $this;
 	}
@@ -146,11 +132,10 @@ trait FormFactoryBuilderTrait
 	 * @param array $aOptions
 	 * @param array $aAjaxOptions
 	 * @param array $aAjaxData
-	 * @param mixed $oData
 	 *
 	 * @return \Combodo\iTop\FormSDK\Service\FormFactory
 	 */
-	public function AddSelectAjaxField(string $sKey, array $aOptions, array $aAjaxOptions, array $aAjaxData = [], mixed $oData = null) : FormFactory
+	public function AddSelectAjaxField(string $sKey, array $aOptions, array $aAjaxOptions, array $aAjaxData = []) : FormFactory
 	{
 		// merge ajax options
 		$aAjaxOptions = array_merge([
@@ -184,7 +169,7 @@ trait FormFactoryBuilderTrait
 			//			}),
 		], $aOptions);
 
-		return $this->AddSelectField($sKey, $aOptions, $oData);
+		return $this->AddSelectField($sKey, $aOptions);
 	}
 
 
@@ -198,11 +183,10 @@ trait FormFactoryBuilderTrait
 	 * @param array $aFieldsToLoad
 	 * @param string $sSearch
 	 * @param int $iAjaxThershold
-	 * @param mixed $oData
 	 *
 	 * @return \Combodo\iTop\FormSDK\Service\FormFactory
 	 */
-	public function AddSelectOqlField(string $sKey, array $aOptions, string $sObjectClass, string $sOql, array $aFieldsToLoad, string $sSearch, int $iAjaxThershold, mixed $oData = null) : FormFactory
+	public function AddSelectOqlField(string $sKey, array $aOptions, string $sObjectClass, string $sOql, array $aFieldsToLoad, string $sSearch, int $iAjaxThershold) : FormFactory
 	{
 		$aAjaxData = [
 			'class' => $sObjectClass,
@@ -219,7 +203,7 @@ trait FormFactoryBuilderTrait
 			'threshold' => $iAjaxThershold,
 			'configuration' => 'OQL'
 		];
-		return $this->AddSelectAjaxField($sKey, $aOptions, $aAjaxOptions, $aAjaxData, $oData);
+		return $this->AddSelectAjaxField($sKey, $aOptions, $aAjaxOptions, $aAjaxData);
 	}
 
 	/**
@@ -227,18 +211,32 @@ trait FormFactoryBuilderTrait
 	 *
 	 * @param string $sKey
 	 * @param array $aOptions
-	 * @param mixed $oData
 	 *
 	 * @return $this
 	 */
-	public function AddSwitchField(string $sKey, array $aOptions, mixed $oData = null) : FormFactory
+	public function AddSwitchField(string $sKey, array $aOptions) : FormFactory
 	{
 		$aOptions = array_merge([
 			'label_attr' => ['class' => 'checkbox-switch'],
 		], $aOptions);
 
 		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::SWITCH, $aOptions);
-		$this->aFieldsData[$sKey] = $oData;
+
+		return $this;
+	}
+
+
+	/**
+	 * Add fieldset.
+	 *
+	 * @param string $sKey
+	 * @param array $aOptions
+	 *
+	 * @return $this
+	 */
+	public function AddFieldSet(string $sKey, array $aOptions) : FormFactory
+	{
+		$this->aFieldsDescriptions[$sKey] = new FormFieldDescription($sKey, FormFieldTypeEnumeration::FIELDSET, $aOptions);
 
 		return $this;
 	}
diff --git a/sources/FormSDK/Symfony/SymfonyBridge.php b/sources/FormSDK/Symfony/SymfonyBridge.php
index 0a19f0e0a..aa739cd69 100644
--- a/sources/FormSDK/Symfony/SymfonyBridge.php
+++ b/sources/FormSDK/Symfony/SymfonyBridge.php
@@ -19,9 +19,12 @@
 
 namespace Combodo\iTop\FormSDK\Symfony;
 
-use Combodo\iTop\FormSDK\Symfony\Type\Compound\FormObjectType;
 use Combodo\iTop\FormSDK\Field\FormFieldDescription;
 use Combodo\iTop\FormSDK\Field\FormFieldTypeEnumeration;
+use Combodo\iTop\FormSDK\Symfony\Type\Compound\FieldsetType;
+use Combodo\iTop\FormSDK\Symfony\Type\Compound\FormObjectType;
+use Combodo\iTop\FormSDK\Symfony\Type\Layout\ColumnType;
+use Combodo\iTop\FormSDK\Symfony\Type\Layout\RowType;
 use LogAPI;
 use Symfony\Component\Form\Extension\Core\Type\CheckboxType;
 use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
@@ -100,7 +103,7 @@ class SymfonyBridge
 					'options' => $oFormDescription->GetOptions()
 				];
 
-			case FormFieldTypeEnumeration::DB_OBJECT:
+			case FormFieldTypeEnumeration::FIELDSET:
 				$aOptions = $oFormDescription->GetOptions();
 				$aFields = [];
 				foreach ($aOptions['fields'] as $oChildFormDescription){
@@ -110,7 +113,7 @@ class SymfonyBridge
 				$aOptions['fields'] = $aFields;
 				return [
 					'name' => $oFormDescription->GetName(),
-					'type' => FormObjectType::class,
+					'type' => FieldsetType::class,
 					'options' => $aOptions
 				];
 
@@ -137,43 +140,51 @@ class SymfonyBridge
 	 * Create Symfony form.
 	 *
 	 * @param array $aDescriptions
-	 * @param array $aData
+	 * @param mixed $oData
 	 * @param string|null $sName
+	 * @param array|null $aLayout
 	 *
 	 * @return \Symfony\Component\Form\FormInterface
 	 */
-	public function CreateForm(array $aDescriptions, array $aData, ?string $sName = null): FormInterface
+	public function CreateForm(array $aDescriptions, mixed $oData, ?string $sName = null, array $aLayout = []): FormInterface
 	{
 		// create Symfony form builder
 		if($sName !== null){
-			$oFormBuilder = $this->oFormFactory->createNamedBuilder($sName, FormType::class, $aData);
+			$oFormBuilder = $this->oFormFactory->createNamedBuilder($sName, FormType::class, $oData);
 		}
 		else{
-			$oFormBuilder = $this->oFormFactory->createBuilder(FormType::class, $aData);
+			$oFormBuilder = $this->oFormFactory->createBuilder(FormType::class, $oData);
 		}
 
-		// iterate throw descriptions...
-		foreach ($aDescriptions as $oFormDescription){
+		// transform fields descriptions...
+		$aSymfonyTypesDeclaration = [];
+		foreach ($aDescriptions as $sKey => $oFormDescription){
+			$aSymfonyTypesDeclaration[$sKey] = $this->ToSymfonyFormType($oFormDescription);
+		}
 
-			// symfony form type description
-			$aSymfony = $this->ToSymfonyFormType($oFormDescription);
+		// create layout types
+		['types' => $aItems]  = $this->CreateLayoutTypes($aLayout, $oFormBuilder, $aSymfonyTypesDeclaration);
+		$oTest = array_merge($aItems, $aSymfonyTypesDeclaration);
+
+		// add symfony types to builder...
+		foreach ($oTest as $oSymfonyTypeDeclaration){
 
 			// add type to form
 			$oFormBuilder->add(
-				$aSymfony['name'],
-				$aSymfony['type'],
-				$aSymfony['options']
+				$oSymfonyTypeDeclaration['name'],
+				$oSymfonyTypeDeclaration['type'],
+				$oSymfonyTypeDeclaration['options']
 			);
 
 			/**
 			 * Allow choices to be loaded client side via ajax.
-			*  without this, field value needs to be part of initial choices that may be empty.
-			 * Need reflexion because, value can be hacked with invalid value without extra validation.
+			 *  without this, field value needs to be part of initial choices that may be empty.
+			 * Need reflexion because, value can be hacked with invalid value without validation.
 			 * @see https://symfony.com/doc/current/reference/forms/types/choice.html#choice-loader
 			 * @see https://itecnote.com/tecnote/php-disable-backend-validation-for-choice-field-in-symfony-2-type/
-			*/
-			if($aSymfony['type'] === ChoiceType::class){
-				$oFormBuilder->get($aSymfony['name'])->resetViewTransformers();
+			 */
+			if($oSymfonyTypeDeclaration['type'] === ChoiceType::class){
+				$oFormBuilder->get($oSymfonyTypeDeclaration['name'])->resetViewTransformers();
 			}
 
 		}
@@ -181,4 +192,62 @@ class SymfonyBridge
 		return $oFormBuilder->getForm();
 	}
 
+	/**
+	 * @param $aLayout
+	 * @param $oFormBuilder
+	 * @param array $aDescriptions
+	 *
+	 * @return array
+	 */
+	private function CreateLayoutTypes($aLayout, $oFormBuilder, array &$aDescriptions){
+
+		$aResult = [];
+		$sClasses = '';
+
+		foreach ($aLayout as $sKey => $oLayoutElement)
+		{
+			if($sKey === 'css_classes'){
+				$sClasses = $oLayoutElement;
+			}
+			else if(str_starts_with($sKey, 'row__')){
+				$aResult[$sKey] = $this->CreateLayoutContainerType($oLayoutElement, $oFormBuilder, $sKey, RowType::class, $aDescriptions);
+			}
+			else if(str_starts_with($sKey, 'column__')){
+				$aResult[$sKey] = $this->CreateLayoutContainerType($oLayoutElement, $oFormBuilder, $sKey, ColumnType::class, $aDescriptions);
+			}
+			else if(str_starts_with($sKey, 'fieldset__')){
+				$aResult[$sKey] = $this->CreateLayoutContainerType($oLayoutElement, $oFormBuilder, $sKey, FieldsetType::class, $aDescriptions);
+			}
+			else {
+				if (array_key_exists($oLayoutElement, $aDescriptions)) {
+					$aResult[$oLayoutElement] = $aDescriptions[$oLayoutElement];
+					unset($aDescriptions[$oLayoutElement]);
+				}
+			}
+		}
+
+		return [
+			'types' => $aResult,
+			'css_classes' => $sClasses
+		];
+	}
+
+	private function CreateLayoutContainerType($oLayoutElement, $oFormBuilder, $sKey, $oType, &$aDescriptions)
+	{
+		['types' => $aItems, 'css_classes' => $sCssClasses] = $this->CreateLayoutTypes($oLayoutElement, $oFormBuilder, $aDescriptions);
+
+		return [
+			'name' => $sKey,
+			'type' => $oType,
+			'options' => [
+				'fields' => $aItems,
+				'attr' => [
+					'class' => $sCssClasses
+				],
+				'inherit_data' => true
+			],
+		];
+	}
+
+
 }
\ No newline at end of file
diff --git a/sources/FormSDK/Symfony/Type/Compound/FieldsetType.php b/sources/FormSDK/Symfony/Type/Compound/FieldsetType.php
new file mode 100644
index 000000000..bfc52c6d6
--- /dev/null
+++ b/sources/FormSDK/Symfony/Type/Compound/FieldsetType.php
@@ -0,0 +1,72 @@
+<?php
+/*
+ * Copyright (C) 2013-2023 Combodo SARL
+ *
+ * This file is part of iTop.
+ *
+ * iTop is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * iTop is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ */
+
+namespace Combodo\iTop\FormSDK\Symfony\Type\Compound;
+
+use Combodo\iTop\FormSDK\Field\FormFieldDescription;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\FormType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+/**
+ * Type representing a fieldset;
+ *
+ * @package FormSDK
+ * @since 3.2.0
+ */
+class FieldsetType extends AbstractType
+{
+
+
+
+	/** @inheritdoc  */
+	public function buildForm(FormBuilderInterface $builder, array $options) : void
+	{
+		
+
+		foreach ($options['fields'] as $oField){
+			$builder->add($oField['name'], $oField['type'], $oField['options']);
+		}
+	}
+
+	private function handleRow(FormBuilderInterface $builder, array $aData){
+
+	}
+
+	private function handleColumn(FormBuilderInterface $builder, array $aData){
+
+	}
+
+	/** @inheritdoc  */
+	public function configureOptions(OptionsResolver $resolver): void
+	{
+		$resolver->setDefaults([
+			'fields' => [],
+			'view' => [],
+		]);
+	}
+
+	/** @inheritdoc  */
+	public function getParent(): string
+	{
+		return FormType::class;
+	}
+
+}
\ No newline at end of file
diff --git a/sources/FormSDK/Symfony/Type/Compound/FormObjectType.php b/sources/FormSDK/Symfony/Type/Compound/FormObjectType.php
index 4f6c207d6..8da495ed0 100644
--- a/sources/FormSDK/Symfony/Type/Compound/FormObjectType.php
+++ b/sources/FormSDK/Symfony/Type/Compound/FormObjectType.php
@@ -34,41 +34,12 @@ use Symfony\Component\OptionsResolver\OptionsResolver;
 class FormObjectType extends AbstractType
 {
 
-	/*
-	 * View Definition.
-	 *
-	 * [
-	 *      'row' => [
-	 *          'col' => [
-	 *              'description' => [
-	 *                  'label' => '',
-	 *                  'css_classes' => ''
-	 *               ],
-	 *              'items' => ['name', 'birthday']
-	 *              'fieldset' => ['address', 'city', 'country']
-	 *          ]
-	 *      ]
-	 * ]
-	 *
-	 *
-	 */
+
 
 	/** @inheritdoc  */
 	public function buildForm(FormBuilderInterface $builder, array $options) : void
 	{
-		foreach ($options['view'] as $oItem) {
 
-			if($oItem === 'row'){
-				$this->handleRow();
-			}
-			else if($oItem === 'col'){
-				$this->handleColumn();
-			}
-			else{
-
-			}
-
-		}
 
 		foreach ($options['fields'] as $oField){
 			$builder->add($oField['name'], $oField['type'], $oField['options']);
@@ -90,7 +61,7 @@ class FormObjectType extends AbstractType
 			'fields' => [],
 			'view' => [],
 			'attr' => [
-				'class' => ''
+				'class' => 'form-object-row'
 			]
 		]);
 	}
diff --git a/sources/FormSDK/Symfony/Type/Layout/ColumnType.php b/sources/FormSDK/Symfony/Type/Layout/ColumnType.php
new file mode 100644
index 000000000..dd44e9408
--- /dev/null
+++ b/sources/FormSDK/Symfony/Type/Layout/ColumnType.php
@@ -0,0 +1,43 @@
+<?php
+/*
+ * Copyright (C) 2013-2023 Combodo SARL
+ *
+ * This file is part of iTop.
+ *
+ * iTop is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * iTop is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ */
+
+namespace Combodo\iTop\FormSDK\Symfony\Type\Layout;
+
+use Combodo\iTop\FormSDK\Field\FormFieldDescription;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\FormType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+/**
+ * Type representing a layout column;
+ *
+ * @package FormSDK
+ * @since 3.2.0
+ */
+class ColumnType extends AbstractType
+{
+
+	/** @inheritdoc  */
+	public function getParent(): string
+	{
+		return LayoutType::class;
+	}
+
+}
\ No newline at end of file
diff --git a/sources/FormSDK/Symfony/Type/Layout/LayoutType.php b/sources/FormSDK/Symfony/Type/Layout/LayoutType.php
new file mode 100644
index 000000000..06d148ff2
--- /dev/null
+++ b/sources/FormSDK/Symfony/Type/Layout/LayoutType.php
@@ -0,0 +1,62 @@
+<?php
+/*
+ * Copyright (C) 2013-2023 Combodo SARL
+ *
+ * This file is part of iTop.
+ *
+ * iTop is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * iTop is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ */
+
+namespace Combodo\iTop\FormSDK\Symfony\Type\Layout;
+
+use Combodo\iTop\FormSDK\Field\FormFieldDescription;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\FormType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+/**
+ * Type representing an abstract layout type;
+ *
+ * @package FormSDK
+ * @since 3.2.0
+ */
+class LayoutType extends AbstractType
+{
+
+	/** @inheritdoc  */
+	public function buildForm(FormBuilderInterface $builder, array $options) : void
+	{
+
+		foreach ($options['fields'] as $oField){
+			$builder->add($oField['name'], $oField['type'], $oField['options']);
+		}
+	}
+
+	/** @inheritdoc  */
+	public function configureOptions(OptionsResolver $resolver): void
+	{
+		$resolver->setDefaults([
+			'fields' => [],
+			'view' => [],
+			'inherit_data' => true // this type is abstract and used for grouping
+		]);
+	}
+
+	/** @inheritdoc  */
+	public function getParent(): string
+	{
+		return FormType::class;
+	}
+
+}
\ No newline at end of file
diff --git a/sources/FormSDK/Symfony/Type/Layout/RowType.php b/sources/FormSDK/Symfony/Type/Layout/RowType.php
new file mode 100644
index 000000000..79c985fd5
--- /dev/null
+++ b/sources/FormSDK/Symfony/Type/Layout/RowType.php
@@ -0,0 +1,43 @@
+<?php
+/*
+ * Copyright (C) 2013-2023 Combodo SARL
+ *
+ * This file is part of iTop.
+ *
+ * iTop is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * iTop is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ */
+
+namespace Combodo\iTop\FormSDK\Symfony\Type\Layout;
+
+use Combodo\iTop\FormSDK\Field\FormFieldDescription;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\FormType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+/**
+ * Type representing a layout row;
+ *
+ * @package FormSDK
+ * @since 3.2.0
+ */
+class RowType extends AbstractType
+{
+
+	/** @inheritdoc  */
+	public function getParent(): string
+	{
+		return LayoutType::class;
+	}
+
+}
\ No newline at end of file
diff --git a/templates/formSDK/themes/portal.html.twig b/templates/formSDK/themes/portal.html.twig
index 27ebbfef6..b84b43caa 100644
--- a/templates/formSDK/themes/portal.html.twig
+++ b/templates/formSDK/themes/portal.html.twig
@@ -31,8 +31,14 @@
 
 {%- endblock form_label -%}
 
-{%- block form_object_row -%}
-    {%- set row_attr = row_attr|merge({class: 'mb-3 form-object-row'}) -%}
-    {{ form_row(form, {'row_attr': row_attr}) }}
-{%- endblock form_object_row -%}
+{%- block row_row -%}
+    {{ form_widget(form, {'attr' : {'class' : attr.class|default('') ~ ' form-layout-row'}}) }}
+{%- endblock row_row -%}
 
+{%- block column_row -%}
+    {{ form_widget(form, {'attr' : {'class' : attr.class|default('') ~ ' form-layout-column'}}) }}
+{%- endblock column_row -%}
+
+{%- block fieldset_row -%}
+    {{ form_row(form, {'attr' : {'class' : attr.class|default('') ~ ' form-compound-fieldset'}}) }}
+{%- endblock fieldset_row -%}