Be sure you've done your research - You must be able to complete:
Meet with the Department Chair of the selected major.
Be sure to take a degree audit with you to review with your new Department Chair (you can obtain one from CyberFriar).
Return the Academic Program Adjustment form (signed by the Department Chair of the selected major) to the Office of the Undeclared Advising Program, Harkins 213. No appointment necessary.