If you are asking where you put your website address on the card, you don't.  GCU is working on a spot on the back of the card, but that is not in effect yet.  Your name will go on the front of the card if you check the box.  You also might want to check these forums for some answers as your questions arise, because some answers may already be here from earlier posts, so feel free to check the forum first, before asking a question.