diff --git a/Admin/Routes/http.php b/Admin/Routes/http.php
index cb99b59..bbe4799 100644
--- a/Admin/Routes/http.php
+++ b/Admin/Routes/http.php
@@ -57,4 +57,53 @@ return [
             'verb' => RouteVerb::GET,
         ],
     ],
+
+    '^.*/api/admin/settings.*$' => [
+        [
+            'dest' => '\Modules\Admin\Controller:apiSettingsSet',
+            'verb' => RouteVerb::SET,
+        ],
+        [
+            'dest' => '\Modules\Admin\Controller:apiSettingsGet',
+            'verb' => RouteVerb::GET,
+        ],
+    ],
+
+    '^.*/api/admin/group.*$' => [
+        [
+            'dest' => '\Modules\Admin\Controller:apiGroupCreate',
+            'verb' => RouteVerb::PUT,
+        ],
+        [
+            'dest' => '\Modules\Admin\Controller:apiGroupUpdate',
+            'verb' => RouteVerb::SET,
+        ],
+        [
+            'dest' => '\Modules\Admin\Controller:apiGroupDelete',
+            'verb' => RouteVerb::DELETE,
+        ],
+        [
+            'dest' => '\Modules\Admin\Controller:apiGroupGet',
+            'verb' => RouteVerb::GET,
+        ],
+    ],
+
+    '^.*/api/admin/account.*$' => [
+        [
+            'dest' => '\Modules\Admin\Controller:apiAccountCreate',
+            'verb' => RouteVerb::PUT,
+        ],
+        [
+            'dest' => '\Modules\Admin\Controller:apiAccountUpdate',
+            'verb' => RouteVerb::SET,
+        ],
+        [
+            'dest' => '\Modules\Admin\Controller:apiAccountDelete',
+            'verb' => RouteVerb::DELETE,
+        ],
+        [
+            'dest' => '\Modules\Admin\Controller:apiAccountGet',
+            'verb' => RouteVerb::GET,
+        ],
+    ],
 ];
diff --git a/Controller.php b/Controller.php
index 3875ead..724c0c3 100644
--- a/Controller.php
+++ b/Controller.php
@@ -15,8 +15,10 @@
  */
 namespace Modules\Admin;
 
+use Modules\Admin\Models\Account;
 use Modules\Admin\Models\AccountMapper;
 use Modules\Admin\Models\GroupMapper;
+use Modules\Admin\Models\Group;
 use phpOMS\Message\RequestAbstract;
 use phpOMS\Message\ResponseAbstract;
 use phpOMS\Module\ModuleAbstract;
@@ -133,8 +135,7 @@ class Controller extends ModuleAbstract implements WebInterface
         $view->setTemplate('/Modules/Admin/Theme/Backend/accounts-list');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1000104001, $request, $response));
 
-        $accountMapper = new AccountMapper($this->app->dbPool->get());
-        $view->setData('list:elements', $accountMapper->getAll());
+        $view->setData('list:elements', AccountMapper::getAll());
         $view->setData('list:count', 1);
 
         return $view;
@@ -156,8 +157,7 @@ class Controller extends ModuleAbstract implements WebInterface
         $view->setTemplate('/Modules/Admin/Theme/Backend/accounts-single');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1000104001, $request, $response));
 
-        $accountMapper = new AccountMapper($this->app->dbPool->get());
-        $view->addData('account', $accountMapper->get((int) $request->getData('id')));
+        $view->addData('account', AccountMapper::get((int) $request->getData('id')));
 
         return $view;
     }
@@ -197,8 +197,7 @@ class Controller extends ModuleAbstract implements WebInterface
         $view->setTemplate('/Modules/Admin/Theme/Backend/groups-list');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1000103001, $request, $response));
 
-        $groupMapper = new GroupMapper($this->app->dbPool->get());
-        $view->setData('list:elements', $groupMapper->getAll());
+        $view->setData('list:elements', GroupMapper::getAll());
 
         return $view;
     }
@@ -219,8 +218,7 @@ class Controller extends ModuleAbstract implements WebInterface
         $view->setTemplate('/Modules/Admin/Theme/Backend/groups-single');
         $view->addData('nav', $this->app->moduleManager->get('Navigation')->createNavigationMid(1000103001, $request, $response));
 
-        $groupMapper = new GroupMapper($this->app->dbPool->get());
-        $view->addData('group', $groupMapper->get((int) $request->getData('id')));
+        $view->addData('group', GroupMapper::get((int) $request->getData('id')));
 
         return $view;
     }
@@ -280,11 +278,82 @@ class Controller extends ModuleAbstract implements WebInterface
         return $view;
     }
 
-    public function apiAccountList(RequestAbstract $request, ResponseAbstract $response, $data = null) 
+    public function apiSettingsGet(RequestAbstract $request, ResponseAbstract $response, $data = null)
     {
-        // todo: instead of returning dom, maybe only return data and let ui handle presentation?!!?!?!?!!
+        $response->set('settings', $this->app->appSettings->get($request->getData('id')));
+    }
 
-        $mapper = new AccountMapper($this->app->dbPool->get());
+    public function apiSettingsSet(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $this->app->appSettings->set([$request->getData('setting') => $request->getData('value')], true);
+    }
+
+    public function apiGroupGet(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $response->set('group', GroupMapper::getByRequest($request));
+    }
+
+    public function apiGroupCreate(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $group = new Group();
+        $group->setName($request->getData('name'));
+        $group->setDescription($request->getData('desc'));
+
+        GroupMapper::create($group);
+
+        $response->set('group', $group->__toString());
+    }
+
+    public function apiGroupDelete(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $status = GroupMapper::delete($request->getData('id'));
+
+        $response->set('group', $status);
+    }
+
+    public function apiGroupUpdate(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $group = GroupMapper::get($request->getData('id'));
+        $group->setName($request->getData('name'));
+        $group->setDescription($request->getData('desc'));
+
+        $status = GroupMapper::update($group);
+
+        $response->set('group', ['status' => $status, 'group' => $group->__toString()]);
+    }
+
+    public function apiAccountGet(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $response->set('account', AccountMapper::getByRequest($request));
+    }
+
+    public function apiAccountCreate(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $account = new Account();
+        $account->setName($request->getData('name'));
+        $account->setDescription($request->getData('desc'));
+
+        AccountMapper::create($account);
+
+        $response->set('account', $account->__toString());
+    }
+
+    public function apiAccountDelete(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $status = AccountMapper::delete($request->getData('id'));
+
+        $response->set('account', $status);
+    }
+
+    public function apiAccountUpdate(RequestAbstract $request, ResponseAbstract $response, $data = null)
+    {
+        $account = AccountMapper::get($request->getData('id'));
+        $account->setName($request->getData('name'));
+        $account->setDescription($request->getData('desc'));
+
+        $status = AccountMapper::update($account);
+
+        $response->set('account', ['status' => $status, 'account' => $account->__toString()]);
     }
 
 }
diff --git a/Models/AccountMapper.php b/Models/AccountMapper.php
index 207f0a8..fc0e500 100644
--- a/Models/AccountMapper.php
+++ b/Models/AccountMapper.php
@@ -16,6 +16,7 @@
 namespace Modules\Admin\Models;
 
 use phpOMS\DataStorage\Database\DataMapperAbstract;
+use phpOMS\DataStorage\Database\RelationType;
 
 class AccountMapper extends DataMapperAbstract
 {
@@ -64,4 +65,21 @@ class AccountMapper extends DataMapperAbstract
      * @since 1.0.0
      */
     protected static $createdAt = 'account_created_at';
+
+    /**
+     * Get object.
+     *
+     * @param mixed $primaryKey Key
+     * @param int   $relations  Load relations
+     * @param mixed $fill       Object to fill
+     *
+     * @return Account
+     *
+     * @since  1.0.0
+     * @author Dennis Eichhorn <d.eichhorn@oms.com>
+     */
+    public static function get($primaryKey, int $relations = RelationType::ALL, $fill = null)
+    {
+        return parent::get((int) $primaryKey, $relations, $fill);
+    }
 }
diff --git a/Models/Group.php b/Models/Group.php
index 4fa4fed..92adf25 100644
--- a/Models/Group.php
+++ b/Models/Group.php
@@ -17,8 +17,22 @@ namespace Modules\Admin\Models;
 
 class Group extends \phpOMS\Account\Group
 {
+    /**
+     * Created at.
+     *
+     * @var \DateTime
+     * @since 1.0.0
+     */
     protected $createdAt = null;
 
+    /**
+     * Created by.
+     *
+     * @var int
+     * @since 1.0.0
+     */
+    protected $createdBy = 0;
+
     public function getCreatedAt() : \DateTime
     {
         return $this->createdAt ?? new \DateTime('NOW');
diff --git a/Models/GroupMapper.php b/Models/GroupMapper.php
index f9cd395..1f0a505 100644
--- a/Models/GroupMapper.php
+++ b/Models/GroupMapper.php
@@ -16,6 +16,7 @@
 namespace Modules\Admin\Models;
 
 use phpOMS\DataStorage\Database\DataMapperAbstract;
+use phpOMS\DataStorage\Database\RelationType;
 
 class GroupMapper extends DataMapperAbstract
 {
@@ -56,4 +57,21 @@ class GroupMapper extends DataMapperAbstract
      * @since 1.0.0
      */
     protected static $createdAt = 'group_created';
+
+    /**
+     * Get object.
+     *
+     * @param mixed $primaryKey Key
+     * @param int   $relations  Load relations
+     * @param mixed $fill       Object to fill
+     *
+     * @return Group
+     *
+     * @since  1.0.0
+     * @author Dennis Eichhorn <d.eichhorn@oms.com>
+     */
+    public static function get($primaryKey, int $relations = RelationType::ALL, $fill = null)
+    {
+        return parent::get((int) $primaryKey, $relations, $fill);
+    }
 }
diff --git a/Models/NullAccount.php b/Models/NullAccount.php
new file mode 100644
index 0000000..53b4195
--- /dev/null
+++ b/Models/NullAccount.php
@@ -0,0 +1,20 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+namespace Modules\Admin\Models;
+
+class NullAccount extends Account
+{
+}
diff --git a/Models/NullGroup.php b/Models/NullGroup.php
new file mode 100644
index 0000000..5ea4693
--- /dev/null
+++ b/Models/NullGroup.php
@@ -0,0 +1,20 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+namespace Modules\Admin\Models;
+
+class NullGroup extends Group
+{
+}
diff --git a/Theme/Backend/groups-create.tpl.php b/Theme/Backend/groups-create.tpl.php
index a3bb2fa..67db276 100644
--- a/Theme/Backend/groups-create.tpl.php
+++ b/Theme/Backend/groups-create.tpl.php
@@ -22,7 +22,7 @@ echo $this->getData('nav')->render(); ?>
 <section class="box w-33 floatLeft">
     <header><h1><?= $this->l11n->lang['Admin']['Group'] ?></h1></header>
     <div class="inner">
-        <form action="<?= \phpOMS\Uri\UriFactory::build('/{/lang}/api/admin/group'); ?>" method="post">
+        <form id="group-create" action="<?= \phpOMS\Uri\UriFactory::build('/{/lang}/api/admin/group'); ?>" method="<?= \phpOMS\Message\Http\RequestMethod::PUT; ?>">
             <table class="layout wf-100">
                 <tbody>
                 <tr><td><label for="iGname"><?= $this->l11n->lang['Admin']['Name'] ?></label>
diff --git a/Theme/backend/groups-create.tpl.php b/Theme/backend/groups-create.tpl.php
index a3bb2fa..67db276 100644
--- a/Theme/backend/groups-create.tpl.php
+++ b/Theme/backend/groups-create.tpl.php
@@ -22,7 +22,7 @@ echo $this->getData('nav')->render(); ?>
 <section class="box w-33 floatLeft">
     <header><h1><?= $this->l11n->lang['Admin']['Group'] ?></h1></header>
     <div class="inner">
-        <form action="<?= \phpOMS\Uri\UriFactory::build('/{/lang}/api/admin/group'); ?>" method="post">
+        <form id="group-create" action="<?= \phpOMS\Uri\UriFactory::build('/{/lang}/api/admin/group'); ?>" method="<?= \phpOMS\Message\Http\RequestMethod::PUT; ?>">
             <table class="layout wf-100">
                 <tbody>
                 <tr><td><label for="iGname"><?= $this->l11n->lang['Admin']['Name'] ?></label>