I don't play in-game, nor pay much attention to the forum. But I'd assume powers in-game would be similar.
I'd assume that they're able to mute people/ kick from worlds. Stuff to do with taking care of people who are trolling/ being rude. Outright banning may or may not be a power but I doubt it. Perhaps even bypassing protectors placed down. The exact details of these powers are probably irrelevant, so long as they don't get abused.