Application Process RE CCS, Computing at UCSB

Can anyone please help me figure out the application process for CCS/Computing at UCSB? Do I need to list CCS Computing as my selected major or backup in order to be considered? Or can I apply to another major/backup, and then reach out to CCS, fill out their essay/recs, and then wait and see if I get accepted? If not, can I still get into my 1st of 2nd choice listed major? Does CCS need to be a listed major in order to apply? Their website is really unclear. Very interested in the program. Any guidance re application is appreciated. Thanks