The Academic Personnel Manual (APM) is the University of California policies and procedures pertaining to academic appointments. “The Call” is UCLA-specific subset of the APM that pertains to non-lecturer faculty https://www.apo.ucla.edu/policies-forms/the-call/an-introduction-to-the-ucla-call .
Key policies related
Faculty Code of Conduct https://www.apo.ucla.edu/policies-forms/finalized-policy/revised-apm-015