XF 1.5 Remove signature

I am trying to find an addon that lets staff remove people's signature, but I found some outdated ones. Is there any recent ones that work for xenforo 1.5?
If you give your moderators permission to edit users, they can misfit the signature.
Where is that permission? Would I have to grant them access to admin cp e.g. make them administrator?

Also if I wanted to allow other user groups to ban people, would they need admin cp access as well?