Enabling/Disabling TAdvTabSheet

Sorry, I know this should probably be obvious...

I have a TAdvPageControl with 7 TAdvTabSheet(s). How can I programmatically enable and disable individual tabsheets so they can/can't be selected by the user under certain circumstances. Is/are there other component(s) that would be more appropriate for this purpose?

Thanks very much for any help.

Never mind. It did turn out to be obvious.