D2 Rez Controller binding

I am running diablo 2 rez via Blizzard app on PC, how ever i use an xbox controller. Now unless i am missing something i cant seem to bind my skills to A, X, B, Y, RB, RT.
I have unlocked warcries and combat masteries, now i understand some are passives, but dont you have to still activate them ?? In which case if i cant bind them how do i use them ??