I have two bookings with SQ. One is award booking. The other is cash booking. I wanted to change the FF number to UA Milage Plus. The UA option does not show up at all on the award booking and the cash booking does not accept the actual UA number. For cash booking I want the miles go to UA program as well as the *G benefits. For the award booking, I am interested in *Gold benefits. Is using the check in agent the only way to get it done?