diff --git a/Layout/default/Preordercampaign/Form.php b/Layout/default/Preordercampaign/Form.php
index 20c23deca..a47caabdd 100644
--- a/Layout/default/Preordercampaign/Form.php
+++ b/Layout/default/Preordercampaign/Form.php
@@ -127,7 +127,29 @@
                   </div>
                 </div>
               </div>
-
+              
+            </div>
+          </div>
+        
+        
+          <div class="card">
+            <div class="card-body">
+            <h4>API-User</h4>
+              <div class="card">
+                <div class="card-body">
+                  <div class="form-group row">
+                    <label class="col-lg-2 col-form-label" for="apiusers">Benutzername</label>
+                    <div class="col-lg-10">
+                      <select class="select2 form-control select2-multiple" name="apiusers[]" id="apiusers" multiple="multiple" data-placeholder="Benutzer auswählen ...">
+                        <?php foreach(UserModel::search(['apikey' => true]) as $user): ?>
+                          <option value="<?=$user->id?>" <?=(is_array($campaign->apiusers) && array_key_exists($user->id, $campaign->apiusers)) ? "selected='selected'" : ""?>><?=$user->username?> (<?=$user->name?>)</option>
+                        <?php endforeach; ?>
+                      </select>
+                    </div>
+                  </div>
+                </div>
+              </div>
+              
               <div class="card">
                 <div class="card-body">
                   <div class="form-group row">
@@ -175,5 +197,10 @@
     closeOnSelect: false
   });
   
+  $("#apiusers").select2({
+    allowClear: true,
+    placeholder: "",
+    closeOnSelect: false
+  });
 </script>
 <?php include(realpath(dirname(__FILE__)."/../../$mfLayoutPackage")."/footer.php"); ?>
\ No newline at end of file
diff --git a/application/Preordercampaign/Preordercampaign.php b/application/Preordercampaign/Preordercampaign.php
index c02551c08..31b6ffbb3 100644
--- a/application/Preordercampaign/Preordercampaign.php
+++ b/application/Preordercampaign/Preordercampaign.php
@@ -6,6 +6,7 @@ class Preordercampaign extends mfBaseModel {
   private $types;
   private $setup_products;
   private $gemeinden;
+  private $apiusers;
   
   
   public function addTypes(Array $types) {
@@ -94,6 +95,14 @@ class Preordercampaign extends mfBaseModel {
         return $this->gemeinden;
       }
       
+      if($name == "apiusers") {
+        $items = PreordercampaignApiuserModel::search(["preordercampaign_id" => $this->id]);
+        foreach($items as $poa) {
+          $this->apiusers[$poa->worker_id] = $poa;
+        }
+        return $this->apiusers;
+      }
+      
       if($name == "creator") {
         $user = mfValuecache::singleton()->get("Worker-id-".$this->create_by);
         if($user) {
diff --git a/application/Preordercampaign/PreordercampaignController.php b/application/Preordercampaign/PreordercampaignController.php
index abe56c549..268ae8b0e 100644
--- a/application/Preordercampaign/PreordercampaignController.php
+++ b/application/Preordercampaign/PreordercampaignController.php
@@ -194,6 +194,19 @@ class PreordercampaignController extends mfBaseController {
       }
     }
     
+    foreach(PreordercampaignApiuserModel::search(['preordercampaign_id' => $campaign->id]) as $pca) {
+      $pca->delete();
+    }
+    if(is_array($r->apiusers) && count($r->apiusers)) {
+      foreach($r->apiusers as $user_id) {
+        $pca = PreordercampaignApiuserModel::getFirst(['preordercampaign_id' => $campaign->id, 'worker_id' => $user_id]);
+        if($pca) continue;
+        
+        $pca = PreordercampaignApiuserModel::create(['preordercampaign_id' => $campaign->id, 'worker_id' => $user_id]);
+        $pca->save();
+      }
+    }
+    
     $this->layout()->setFlash("Vorbestellkampagne erfolgreich gespeichert.", "success");
     //$this->redirect("Preordercampaign", "Edit", ['id' => $new_id]);
     $this->redirect("Preordercampaign");
diff --git a/application/PreordercampaignApiuser/PreordercampaignApiuser.php b/application/PreordercampaignApiuser/PreordercampaignApiuser.php
new file mode 100644
index 000000000..fc5d3ce04
--- /dev/null
+++ b/application/PreordercampaignApiuser/PreordercampaignApiuser.php
@@ -0,0 +1,5 @@
+<?php
+
+class PreordercampaignApiuser extends mfBaseModel {
+  
+}
\ No newline at end of file
diff --git a/application/PreordercampaignApiuser/PreordercampaignApiuserModel.php b/application/PreordercampaignApiuser/PreordercampaignApiuserModel.php
new file mode 100644
index 000000000..497c3ed95
--- /dev/null
+++ b/application/PreordercampaignApiuser/PreordercampaignApiuserModel.php
@@ -0,0 +1,106 @@
+<?php
+
+class PreordercampaignApiuserModel {
+  public $preordercampaign_id;
+  public $worker_id;
+
+  public $create_by;
+  public $edit_by;
+  public $create;
+  public $edit;
+  
+  public static function create(Array $data) {
+    $model = new PreordercampaignApiuser();
+    
+    foreach($data as $field => $value) {
+      if(property_exists(get_called_class(), $field)) {
+        $model->$field = $value;
+      }
+    }
+    
+    $me = mfValuecache::singleton()->get("me");
+    if(!$me) {
+      $me = new User();
+      $me->loadMe();
+      mfValuecache::singleton()->set("me", $me);
+    }
+
+    if($model->create_by === null) {
+      $model->create_by = $me->id;
+    }
+    if($model->edit_by === null) {
+      $model->edit_by = $me->id;
+    }
+    
+    return $model;
+  }
+  
+  public static function getAll() {
+    $items = [];
+    
+    $db = FronkDB::singleton();
+    
+    $res = $db->select("PreordercampaignApiuser", "*", "ORDER BY preordercampaign_id, worker_id");
+    if($db->num_rows($res)) {
+      while($data = $db->fetch_object($res)) {
+        $items[] = new PreordercampaignApiuser($data);
+      }
+    }
+    return $items;
+    
+  }
+  
+  public static function getFirst($filter) {
+    $db = FronkDB::singleton();
+    
+    $where = self::getSqlFilter($filter);
+    $res = $db->select("PreordercampaignApiuser", "*", "$where ORDER BY preordercampaign_id, worker_id");
+    if($db->num_rows($res)) {
+      $data = $db->fetch_object($res);
+      $item = new PreordercampaignApiuser($data);
+      if($item->id) {
+        return $item;
+      } else {
+        return null;
+      }
+    }
+    return null;
+  }
+  
+  public static function search($filter) {
+    $items = [];
+    $db = FronkDB::singleton();
+    
+    $where = self::getSqlFilter($filter);
+    $res = $db->select("PreordercampaignApiuser", "*", "$where ORDER BY preordercampaign_id, worker_id");
+    if($db->num_rows($res)) {
+      while($data = $db->fetch_object($res)) {
+        $items[] = new PreordercampaignApiuser($data);
+      }
+    }
+    return $items;
+  }
+  
+  private static function getSqlFilter($filter) {
+    $where = "1=1 ";
+
+    //var_dump($filter);exit;
+    if(array_key_exists("preordercampaign_id", $filter)) {
+      $preordercampaign_id = $filter['preordercampaign_id'];
+      if(is_numeric($preordercampaign_id)) {
+        $where .= " AND preordercampaign_id=$preordercampaign_id";
+      }
+    }
+    
+    if(array_key_exists("worker_id", $filter)) {
+      $worker_id = $filter['worker_id'];
+      if(is_numeric($worker_id)) {
+        $where .= " AND worker_id=$worker_id";
+      }
+    }
+    
+    //var_dump($filter, $where);exit;
+    return $where;
+  }
+  
+}
diff --git a/application/User/UserModel.php b/application/User/UserModel.php
index d3ef81ddd..c775f3e46 100644
--- a/application/User/UserModel.php
+++ b/application/User/UserModel.php
@@ -91,6 +91,16 @@ class UserModel {
         $where .= " AND address_id=$addressid";
       }
     }
+    
+    if(array_key_exists("apikey", $filter)) {
+      $apikey = $filter['apikey'];
+      if($apikey === true) {
+        $where .= " AND (apikey IS NOT NULL OR apikey <> '')";
+      } elseif($apikey === null) {
+        $where .= " AND (apikey IS NULL OR apikey='')";
+      }
+    }
+    
     //var_dump($filter, $where);exit;
     return $where;
   }