I'm a fairly inexperienced herolab user for custom creation purposes. I want to make a variant mystic adept who can purchase astral projection as they can perception but can only be taken at magic priority A. Essentially magical power will go Aspected Magician -> Magician/Adept -> Mystic Adept. However I want to retain the normal mystic adept for normal games. So I'm wondering how hard would it be to set up a variant where in character creation I can click a Variant houserules option to toggle the variant adept or love it unchecked for the normal one like you can check or uncheck books to use. Help appreciated too.