Board Thread:Support Requests - Getting Technical/@comment-34757329-20181130041635/@comment-25356303-20181202062021

He is referring to Wikia Staff. You can send them an email at Special:Contact if you want them to edit the usergroups. I know that wikis such as Nukapedia (Fallout) have done this in the past by adding the block right to the Discussions Moderator usergroup.

Personally, if your friend is not acting in accordance with the rules of your community, I would simply demote him. He does not need rights if he is only going to abuse them.