diff --git a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/README.md b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/README.md
index 620e57e..4520cea 100644
--- a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/README.md
+++ b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/README.md
@@ -20,13 +20,17 @@ class UsersSubform << (F,LightGreen) >> #RoyalBlue {
   + get(string $linkValue, string $linkKey, ...) : ?array
   + set(mixed $items, string $indexKey, ...) : bool
   + getTable() : string
-  # initializeUserProperties() : void
+  - initializeUserProperties() : void
   - purge(array $items, string $indexKey, ...) : void
   - getUsersDetails(array $items) : array
   - getUserDetails(array $item) : void
   - converter(array $items, array $keySet, ...) : array
   - process(mixed $items, string $indexKey, ...) : array
   - setUserDetails(array $item) : int
+  - loadUser(array $item) : ?User
+  - extractUserDetails(array $item, ?User $user) : array
+  - assignUserGroups($details, ?User $user, ...) : void
+  - saveUserDetails(array $details, int $userId) : int
 }
 
 note right of UsersSubform::__construct
@@ -136,7 +140,42 @@ note right of UsersSubform::process
 end note
 
 note left of UsersSubform::setUserDetails
-  Set the user details.
+  Handles setting user details and saving them.
+This function retrieves the user by ID, sets the user details,
+and adds appropriate user groups before saving the user.
+
+  since: 5.0.2
+  return: int
+end note
+
+note right of UsersSubform::loadUser
+  Load the user based on the user ID from the item array.
+
+  since: 5.0.2
+  return: ?User
+end note
+
+note left of UsersSubform::extractUserDetails
+  Extract user details from the item array and prepare them for saving.
+
+  since: 5.0.2
+  return: array
+end note
+
+note right of UsersSubform::assignUserGroups
+  Assigns user groups based on existing groups and entity type.
+
+  since: 5.0.2
+  return: void
+  
+  arguments:
+    $details
+    ?User $user
+    array $item
+end note
+
+note left of UsersSubform::saveUserDetails
+  Save the user details using UserHelper and handle exceptions.
 
   since: 5.0.2
   return: int
diff --git a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.php b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.php
index 8bdd4f1..8ce8ac5 100644
--- a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.php
+++ b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.php
@@ -12,11 +12,13 @@
 namespace VDM\Joomla\Data;
 
 
-use Joomla\CMS\Factory;
+use Joomla\CMS\Factory;
+use Joomla\CMS\User\User;
 use VDM\Joomla\Interfaces\Data\ItemsInterface as Items;
 use VDM\Joomla\Data\Guid;
 use VDM\Joomla\Componentbuilder\Utilities\UserHelper;
 use VDM\Joomla\Componentbuilder\Utilities\Exception\NoUserIdFoundException;
+use VDM\Joomla\Utilities\Component\Helper as Component;
 use VDM\Joomla\Interfaces\Data\GuidInterface;
 use VDM\Joomla\Interfaces\Data\SubformInterface;
 
@@ -85,7 +87,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param string $table The table that should be active
 	 *
 	 * @return self
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	public function table(string $table): self
 	{
@@ -103,7 +105,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param array    $get        The array get:set of the keys of each row in the subform.
 	 *
 	 * @return array|null   The subform
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	public function get(string $linkValue, string $linkKey, string $field, array $get): ?array
 	{
@@ -128,7 +130,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param string   $linkValue  The value of the link key in child table.
 	 *
 	 * @return bool
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	public function set(mixed $items, string $indexKey, string $linkKey, string $linkValue): bool
 	{
@@ -150,7 +152,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * Get the current active table
 	 *
 	 * @return  string
-	 * @since 3.2.2
+	 * @since   3.2.2
 	 */
 	public function getTable(): string
 	{
@@ -163,7 +165,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @return void
 	 * @since  5.0.2
 	 */
-	protected function initializeUserProperties(): void
+	private function initializeUserProperties(): void
 	{
 		$user = UserHelper::getUserById(0);
 
@@ -187,7 +189,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param string   $linkValue  The value of the link key in child table.
 	 *
 	 * @return void
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	private function purge(array $items, string $indexKey, string $linkKey, string $linkValue): void
 	{
@@ -229,7 +231,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param array  $items  Array of objects or arrays to be filtered.
 	 *
 	 * @return array
-	 * @since 5.0.2
+	 * @since  5.0.2
 	 */
 	private function getUsersDetails(array $items): array
 	{
@@ -248,7 +250,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param array  $item  The user map array
 	 *
 	 * @return void
-	 * @since 5.0.2
+	 * @since  5.0.2
 	 */
 	private function getUserDetails(array &$item): void
 	{
@@ -285,7 +287,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param string $field  The field prefix for the resulting associative array.
 	 *
 	 * @return array Array of filtered arrays set by association.
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	private function converter(array $items, array $keySet, string $field): array
 	{
@@ -329,7 +331,7 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	 * @param string   $linkValue  The value of the link key in child table.
 	 *
 	 * @return array  The processed array of arrays.
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	private function process($items, string $indexKey, string $linkKey, string $linkValue): array
 	{
@@ -365,27 +367,66 @@ final class UsersSubform implements GuidInterface, SubformInterface
 	}
 
 	/**
-	 * Set the user details.
+	 * Handles setting user details and saving them.
 	 *
-	 * @param array  $item  The user details
+	 * This function retrieves the user by ID, sets the user details, 
+	 * and adds appropriate user groups before saving the user.
 	 *
-	 * @return int
-	 * @since 5.0.2
+	 * @param array $item The user details passed by reference.
+	 *
+	 * @return int The ID of the saved user, or 0 on failure.
+	 * @since  5.0.2
 	 */
 	private function setUserDetails(array &$item): int
 	{
-		$details = [];
-		$user = null;
+		$user = $this->loadUser($item);
+		$details = $this->extractUserDetails($item, $user);
+		$this->assignUserGroups($details, $user, $item);
+		
+		return $this->saveUserDetails($details, $details['id'] ?? 0);
+	}
 
-		// now load the user ID
-		if (isset($item['user_id']) && is_numeric($item['user_id']) && $item['user_id'] > 0)
+	/**
+	 * Load the user based on the user ID from the item array.
+	 *
+	 * @param array $item The array containing user details.
+	 * 
+	 * @return User|null The user object if found, null otherwise.
+	 * @since  5.0.2
+	 */
+	private function loadUser(array $item): ?User
+	{
+		if (!isset($item['user_id']) || !is_numeric($item['user_id']) || $item['user_id'] <= 0)
 		{
-			// Retrieve the user by ID
-			$user = UserHelper::getUserById((int)$item['user_id']);
-			if ($user->id == $item['user_id'])
-			{
-				$details['id'] = (int) $item['user_id'];
-			}
+			return null;
+		}
+
+		$user = UserHelper::getUserById((int) $item['user_id']);
+
+		if ($user && $user->id == $item['user_id'])
+		{
+			return $user;
+		}
+
+		return null;
+	}
+
+	/**
+	 * Extract user details from the item array and prepare them for saving.
+	 *
+	 * @param array     $item The array containing user details.
+	 * @param User|null $user The user object if found, null otherwise.
+	 * 
+	 * @return array The prepared user details array.
+	 * @since  5.0.2
+	 */
+	private function extractUserDetails(array &$item, ?User $user): array
+	{
+		$details = [];
+
+		if ($user !== null)
+		{
+			$details['id'] = (int) $item['user_id'];
 		}
 
 		foreach ($this->user as $property)
@@ -397,18 +438,54 @@ final class UsersSubform implements GuidInterface, SubformInterface
 			}
 		}
 
-		if ($user !== null)
-		{
-			$details['group'] = $user->getAuthorisedGroups();
-		}
+		return $details;
+	}
 
+	/**
+	 * Assigns user groups based on existing groups and entity type.
+	 *
+	 * @param array     &$details The array to store user details including groups.
+	 * @param User|null $user     The user object if found, null otherwise.
+	 * @param array     $item     The array containing additional user details.
+	 *
+	 * @return void
+	 * @since 5.0.2
+	 */
+	private function assignUserGroups(array &$details, ?User $user, array $item): void
+	{
+		$details['groups'] = $user !== null ? $user->groups : [];
+
+		if (!empty($item['entity_type']))
+		{
+			$groups = Component::getParams()->get($item['entity_type'] . '_groups', []);
+			foreach ($groups as $group)
+			{
+				if (!in_array($group, $details['groups']))
+				{
+					$details['groups'][] = $group;
+				}
+			}
+		}
+	}
+
+	/**
+	 * Save the user details using UserHelper and handle exceptions.
+	 *
+	 * @param array $details The prepared user details array.
+	 * @param int   $userId  The ID of the user being processed.
+	 * 
+	 * @return int The ID of the saved user, or 0 on failure.
+	 * @since 5.0.2
+	 */
+	private function saveUserDetails(array $details, int $userId): int
+	{
 		try {
 			return UserHelper::save($details);
-		} catch(NoUserIdFoundException $e) {
+		} catch (NoUserIdFoundException $e) {
 			Factory::getApplication()->enqueueMessage($e->getMessage(), 'error');
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			Factory::getApplication()->enqueueMessage($e->getMessage(), 'warning');
-			return $item['user_id'];
+			return $userId;
 		}
 
 		return 0;
diff --git a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.power b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.power
index 4c3d6e8..78bb61f 100644
--- a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.power
+++ b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/code.power
@@ -55,7 +55,7 @@
 	 * @param string $table The table that should be active
 	 *
 	 * @return self
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	public function table(string $table): self
 	{
@@ -73,7 +73,7 @@
 	 * @param array    $get        The array get:set of the keys of each row in the subform.
 	 *
 	 * @return array|null   The subform
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	public function get(string $linkValue, string $linkKey, string $field, array $get): ?array
 	{
@@ -98,7 +98,7 @@
 	 * @param string   $linkValue  The value of the link key in child table.
 	 *
 	 * @return bool
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	public function set(mixed $items, string $indexKey, string $linkKey, string $linkValue): bool
 	{
@@ -120,7 +120,7 @@
 	 * Get the current active table
 	 *
 	 * @return  string
-	 * @since 3.2.2
+	 * @since   3.2.2
 	 */
 	public function getTable(): string
 	{
@@ -133,7 +133,7 @@
 	 * @return void
 	 * @since  5.0.2
 	 */
-	protected function initializeUserProperties(): void
+	private function initializeUserProperties(): void
 	{
 		$user = UserHelper::getUserById(0);
 
@@ -157,7 +157,7 @@
 	 * @param string   $linkValue  The value of the link key in child table.
 	 *
 	 * @return void
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	private function purge(array $items, string $indexKey, string $linkKey, string $linkValue): void
 	{
@@ -199,7 +199,7 @@
 	 * @param array  $items  Array of objects or arrays to be filtered.
 	 *
 	 * @return array
-	 * @since 5.0.2
+	 * @since  5.0.2
 	 */
 	private function getUsersDetails(array $items): array
 	{
@@ -218,7 +218,7 @@
 	 * @param array  $item  The user map array
 	 *
 	 * @return void
-	 * @since 5.0.2
+	 * @since  5.0.2
 	 */
 	private function getUserDetails(array &$item): void
 	{
@@ -255,7 +255,7 @@
 	 * @param string $field  The field prefix for the resulting associative array.
 	 *
 	 * @return array Array of filtered arrays set by association.
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	private function converter(array $items, array $keySet, string $field): array
 	{
@@ -299,7 +299,7 @@
 	 * @param string   $linkValue  The value of the link key in child table.
 	 *
 	 * @return array  The processed array of arrays.
-	 * @since 3.2.2
+	 * @since  3.2.2
 	 */
 	private function process($items, string $indexKey, string $linkKey, string $linkValue): array
 	{
@@ -335,27 +335,66 @@
 	}
 
 	/**
-	 * Set the user details.
+	 * Handles setting user details and saving them.
 	 *
-	 * @param array  $item  The user details
+	 * This function retrieves the user by ID, sets the user details, 
+	 * and adds appropriate user groups before saving the user.
 	 *
-	 * @return int
-	 * @since 5.0.2
+	 * @param array $item The user details passed by reference.
+	 *
+	 * @return int The ID of the saved user, or 0 on failure.
+	 * @since  5.0.2
 	 */
 	private function setUserDetails(array &$item): int
 	{
-		$details = [];
-		$user = null;
+		$user = $this->loadUser($item);
+		$details = $this->extractUserDetails($item, $user);
+		$this->assignUserGroups($details, $user, $item);
+		
+		return $this->saveUserDetails($details, $details['id'] ?? 0);
+	}
 
-		// now load the user ID
-		if (isset($item['user_id']) && is_numeric($item['user_id']) && $item['user_id'] > 0)
+	/**
+	 * Load the user based on the user ID from the item array.
+	 *
+	 * @param array $item The array containing user details.
+	 * 
+	 * @return User|null The user object if found, null otherwise.
+	 * @since  5.0.2
+	 */
+	private function loadUser(array $item): ?User
+	{
+		if (!isset($item['user_id']) || !is_numeric($item['user_id']) || $item['user_id'] <= 0)
 		{
-			// Retrieve the user by ID
-			$user = UserHelper::getUserById((int)$item['user_id']);
-			if ($user->id == $item['user_id'])
-			{
-				$details['id'] = (int) $item['user_id'];
-			}
+			return null;
+		}
+
+		$user = UserHelper::getUserById((int) $item['user_id']);
+
+		if ($user && $user->id == $item['user_id'])
+		{
+			return $user;
+		}
+
+		return null;
+	}
+
+	/**
+	 * Extract user details from the item array and prepare them for saving.
+	 *
+	 * @param array     $item The array containing user details.
+	 * @param User|null $user The user object if found, null otherwise.
+	 * 
+	 * @return array The prepared user details array.
+	 * @since  5.0.2
+	 */
+	private function extractUserDetails(array &$item, ?User $user): array
+	{
+		$details = [];
+
+		if ($user !== null)
+		{
+			$details['id'] = (int) $item['user_id'];
 		}
 
 		foreach ($this->user as $property)
@@ -367,18 +406,54 @@
 			}
 		}
 
-		if ($user !== null)
-		{
-			$details['group'] = $user->getAuthorisedGroups();
-		}
+		return $details;
+	}
 
+	/**
+	 * Assigns user groups based on existing groups and entity type.
+	 *
+	 * @param array     &$details The array to store user details including groups.
+	 * @param User|null $user     The user object if found, null otherwise.
+	 * @param array     $item     The array containing additional user details.
+	 *
+	 * @return void
+	 * @since 5.0.2
+	 */
+	private function assignUserGroups(array &$details, ?User $user, array $item): void
+	{
+		$details['groups'] = $user !== null ? $user->groups : [];
+
+		if (!empty($item['entity_type']))
+		{
+			$groups = Component::getParams()->get($item['entity_type'] . '_groups', []);
+			foreach ($groups as $group)
+			{
+				if (!in_array($group, $details['groups']))
+				{
+					$details['groups'][] = $group;
+				}
+			}
+		}
+	}
+
+	/**
+	 * Save the user details using UserHelper and handle exceptions.
+	 *
+	 * @param array $details The prepared user details array.
+	 * @param int   $userId  The ID of the user being processed.
+	 * 
+	 * @return int The ID of the saved user, or 0 on failure.
+	 * @since 5.0.2
+	 */
+	private function saveUserDetails(array $details, int $userId): int
+	{
 		try {
 			return UserHelper::save($details);
-		} catch(NoUserIdFoundException $e) {
+		} catch (NoUserIdFoundException $e) {
 			Factory::getApplication()->enqueueMessage($e->getMessage(), 'error');
-		} catch(\Exception $e) {
+		} catch (\Exception $e) {
 			Factory::getApplication()->enqueueMessage($e->getMessage(), 'warning');
-			return $item['user_id'];
+			return $userId;
 		}
 
 		return 0;
diff --git a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/settings.json b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/settings.json
index 5ab98c0..f17c492 100644
--- a/src/46b98346-ec98-42b3-a393-96c7d1282b1c/settings.json
+++ b/src/46b98346-ec98-42b3-a393-96c7d1282b1c/settings.json
@@ -28,12 +28,16 @@
         "use_selection3": {
             "use": "1c10a5f1-204d-4f17-ad9f-0e0684f2030d",
             "as": "default"
+        },
+        "use_selection4": {
+            "use": "640b5352-fb09-425f-a26e-cd44eda03f15",
+            "as": "Component"
         }
     },
     "extendsinterfaces": null,
     "namespace": "[[[NamespacePrefix]]]\\Joomla\\Data.UsersSubform",
     "description": "CRUD the user data of any sub-form to another view (table)\r\n\r\n@since  5.0.2",
     "licensing_template": "\/**\r\n * @package    Joomla.Component.Builder\r\n *\r\n * @created    3rd September, 2020\r\n * @author     Llewellyn van der Merwe <https:\/\/dev.vdm.io>\r\n * @git        Joomla Component Builder <https:\/\/git.vdm.dev\/joomla\/Component-Builder>\r\n * @copyright  Copyright (C) 2015 Vast Development Method. All rights reserved.\r\n * @license    GNU General Public License version 2 or later; see LICENSE.txt\r\n *\/\r\n",
-    "head": "use Joomla\\CMS\\Factory;",
+    "head": "use Joomla\\CMS\\Factory;\r\nuse Joomla\\CMS\\User\\User;",
     "composer": ""
 }
\ No newline at end of file