This add-on is designed to add a moderation settings for attachments posted on your forum. Admin can put groups on moderation for posting attachments. They will not be shown in posts until they have have been approved. To moderate a group for posting attachments, a new permission setting is now available in group permissions, Follow message attachment moderation rules:
Moderated attachments in posts will be seen by users with XenForo 's View moderated threads / posts: permission setting and post owners.
Moderated attachments in Moderation Queue will show only to those users with with XenForo's Approve / unapprove threads / posts permissions.
Even when someone edits a post and uploads an attachment, it will still go to the moderation queue.