Notwithstanding Section 87356, every person authorized to serve as a community college instructor, librarian, counselor, student personnel worker, supervisor, administrator, or chief administrative officer under a credential shall retain the right to serve under the terms of that credential, and, for that purpose, shall be deemed to possess the minimum qualifications specified for every discipline or service covered by the credential until the expiration of that credential. The board of governors shall adopt regulations as necessary to implement this requirement.