I have a group of external users that I want to block from adding images, video links and outside links to discussions or the replies/comments. This group can get bad quickly since they are non-customers. I have set their permissions to not allow image upload, but that only grays out the insert image in the advanced discussion editor and not in the reply/comment (bug?). Also there seems to be no way to block linking video. I am ok with customers doing all of this, I have leverage with them, but non customer in an open forum, I need to restrict them.
Summary: How do I
Block a group of users from inserting and /or uploading images. This includes linking images by URL