Section 31782 Of Article 12. Death Benefit From California Government Code >> Division 4. >> Title 3. >> Part 3. >> Chapter 3. >> Article 12.

. The nomination of a beneficiary under this system, other than nominations under optional settlements 2, 3 and 4, may be revoked at the pleasure of the person who made it and a different beneficiary nominated by written designation duly executed and filed with the board.