First, you need to get the user ID of the person you like to assign as mod. Click on the user image or name, and it will take you to user page. There, you can see his/her user ID, please copy it. Open admin panel: https://apps.facebook.com/fbulletin/admin/index.php">https://apps.facebook.com/fbulletin/admin/index.php Then select your forum and click on add / edit forum categories. Later click on edit link that belongs to the category you like to add/edit mods.