"Crashing" means trying to add a class after it has already been closed due to full enrollment and the wait list is also full. To "crash" an in-person class, you need to show up to the first day of the class that you want to add. Inform the professor that you are hoping to add the class and they will provide you with next steps. For online classes that you can't physically show up to and "crash", please e-mail the professor instead. You can search for the professor's e-mail by using the "People Search" tool on the top right hand corner of this page or find it on the class schedule.