Add missing user concurrent stream script

data/interfaces/default/notification_triggers_modal.html

@@ -60,7 +60,7 @@
                         <div class="checkbox">
                             <label>
                                 <input type="checkbox" data-size="small" data-id="${data['id']}" data-config-name="${data['config_prefix']}_on_concurrent" ${helpers.checked(data['on_concurrent'])} class="toggle-switches">
-                                Notify on user concurrent stream
+                                Notify on user concurrent streams
                             </label>
                             <p class="help-block">Trigger notification when a user has concurrent streams.</p>
                         </div>

plexpy/notifiers.py

@@ -2108,6 +2108,9 @@ class Scripts(object):
         elif notify_action == 'pmsupdate':
             script = plexpy.CONFIG.SCRIPTS_ON_PMSUPDATE_SCRIPT
 
+        elif notify_action == 'concurrent':
+            script = plexpy.CONFIG.SCRIPTS_ON_CONCURRENT_SCRIPT
+
         else:
             # For manual scripts
             script = kwargs.get('script', '')
@@ -2284,6 +2287,13 @@ class Scripts(object):
                           'description': 'Choose the script for Plex update available.',
                           'input_type': 'select',
                           'select_options': self.list_scripts()
+                          },
+                         {'label': 'User Concurrent Streams',
+                          'value': plexpy.CONFIG.SCRIPTS_ON_CONCURRENT_SCRIPT,
+                          'name': 'scripts_on_concurrent_script',
+                          'description': 'Choose the script for user concurrent streams.',
+                          'input_type': 'select',
+                          'select_options': self.list_scripts()
                           }
                          ]