For anyone that's looking for more information, I had my interview and here's the general timeline:
After interview, you either do or don't get an e-mail asking for references. if you get the e-mail, you move on. 4 references needed, its a skill-survey, like 27 questions ranking from 1-7. They are scoring each applicant on a rubric: interview, references, GPA, relevant work experience, and goal statement. If you score high enough, then you get invited to the in person interview day which is going to be November 12. if you can't make that day, she said they work with you so that you can come a different day.
During the interview they ask for your top 3 units of preference. The decisions for which unit you interview for are based on your rubric score. Higher scorers get their first choice, and so on. I hope this helps any of you looking.