Class waitlist

<p>I've tried making a few last minute changes to my schedule as the beginning of the school year approaches. I've found that All the classes are full, which I expected, but I can't seem to get put on a waitlist. Whenever I change the section to from the one I'm in to the one I want to change to, it gives me a message saying the class is full. I didn't get any option to be on the waitlist, even with sections that have a person or two on the waitlist already. Do I have to call or go in person to request to be on the waitlist? Is it possible that the waitlist is closed off since it's so close to the start of the year?</p>