How do I list my college major on my Facebook profile?

[BRobb]

I've seen many other people's profiles with their major listed just below their University, as a clickable link. So for example, I am an Economics major at the University of North Carolina, and there is a Facebook page called "Economics (The University of North Carolina at Chapel Hill)", but I can't figure out how to get it set as my major.

I always select the best answer, thanks.