<p>I'm wait listed in a class right now and enrolled in 18 units... is there any way I can add another lecture that isn't wait listed incase I dont get the one I'm in now? ( i know it'll be 23 units and max is 19) but I know Berkeley has a "shop/drop" system or whatever it is they call it.. and they r allowed to do that, do we have anything similar to this? Thx</p>