UCLA Playwriting

Hi everyone, I’m a high school freshman applying to UCLA Theater specifically for playwriting, does anyone have any information on the process for the interview at all? Also, on the UCLA website, they vaguely mention something about mailing in supplemental materials, and not being able to turn them in on the day of the interview, what does this mean? Does this mean I have to mail in my scripts that I already submitted online? I’m super confused, and would appreciate any help, thanks!