I've found something else

in the eStore Options > Manage settings > Administrator Usergroups & Protected From Options Usergroups
If you try entering multiple Usergroups using the coma like it says. It saves the first usergroup but doesn't save the 2nd usergroup ..
Also ... for the life of me I remember seeing a area to setup Thief ... but I can't find it anymore. I know if you go to Manage Options you can click thief. And at the bottom is the setup for those options .. but I swear I saw a place to use those ...