I'm curious, when you make someone a super-admin (library/config.php), do you also add them to all User Groups? Is that how you avoid any future restrictions for him to manage the whole forum top to bottom?
So you're saying that the mere fact of being a Super Admin would already give them full access? When I click his name in the ACP, settings are not checked/selected for User Groups. It had to be done manually. I don't yet know what the difference is between "Front end permissions" and this.
Minor correction. Set that as their secondary end of story. All I'm saying is he wasn't getting what you were saying. There is a really simple solution. You can tell him all day but you cant understand it for him.
I will look into your advice to create a new user group called Super Admin and set all Secondary to all. That makes sense. For now, I have set all the individuals with a super admin status this way, individually.