How to get in a class that is full?

<p>I see that some classes that are "C" Complete or full, have folks that are added to the class so it goes into a negative status, like -1, or -2, etc. How are people able to do that? I'd like to be able to do that. Just curious.</p>

<p>You have to get an override. Contacting the professor and/or the department is a good start.</p>