Macbook air: "allow user to administer this computer" button GREYED OUT in system preferences?
I just purchased a MacBook air and was trying to set up user preferences, however the button that would allow user to administer this computer is greyed out for some reason and it's also unchecked, so I can't really make any changes to the computer. Any tips on how I can get around this? This is my first MacBook so I'm kinda lost. Thanks!