Board Thread:Support Requests - Getting Technical/@comment-4848837-20130703193446/@comment-1158325-20130704023615

I'm pretty sure you can have custom user groups created, but there isn't a built-in way to ban people from the forums. Someone asked about it here recently, but unfortunately these forums are hard to search through. You could try using site-wide JavaScript to prevent them from using the forum, but that isn't totally reliable.