If an object is marked with a padlock the object belongs to a screen group, and can't be edited in this location or group. You have to go the the group where the object has been published to be able to edit the object.
- Under the name of the object the name of the group is displayed.
- You can also hover the mouse on the object for a shortcut to the group.
If you don't have access to the group you can contact your admin in PLAYipp to get access to the group.