I am trying to register for more than 18 credits and Webreg is not letting me add another course. Can I add more than 18 credits?

FAQ Type: Registration
FAQ Response:
During the pre-semester registration period, there is an 18-credit restriction. All SAS-NB students will be able to register for up to 20.5 credits during the Add/Drop period which begins on the first day of the new semester. We encourage you to register for a minimum of 12 credits for full-time status, even if you plan to make adjustments to your schedule during.