Fixed.
It causes a little bit of trouble as due to the fact that we are not allowed to move topics out of it at the moment though so topics have to be carefully handled.
I'd have used the Archive permissions for it but it seems to be rather buggy and as such does not prevent people of posting in it. For now this will do but I'll ask someone with more permissions to help me fix it so that we can actually delete/move/... topics if we are supposed to have permissions in them..