How to batch cancel multiple key cards

1.click the software's "general function function list(G)" -> then click "card replacement"

2.The click option "Master Card" as the illustration;
->put a valid blank card on the encoder;
->click "Issue" to make a Replacement card for previous Master card;
->swipe your current authorize card which was issued before on the lock, then swipe this Replacement Card for master card on the door locks one by one on which user wants to cancel all issued master card;
->Then all door lock will not accept the old master cards any more;
->pay attention: choose the current time when cutting the replacement card;
->User can cancel other key cards like Floor Cards, Visitor Cards, Emergency Cards, Gate Cards by similar replacement card as above.