Cal. Code Regs. tit. 2 § 16002.2.2
An agreement of agent of depository shall be executed on behalf of the agent of depository by the duly authorized president or a duly authorized vice president of such agent of depository and by the duly authorized secretary or a duly authorized assistant secretary of such agent of depository (or if there be no secretary or assistant secretary, then in lieu thereof, by a duly authorized officer of such agent of depository who performs duties usually performed by a secretary or assistant secretary). An agreement of agent of depository shall be acknowledged in the manner provided by law for the acknowledgment of an instrument, and the certificate of the officer taking the acknowledgment shall be attached to the agreement. An agreement of agent of depository shall bear the corporate seal of such agent of depository.
Cal. Code Regs. Tit. 2, § 16002.2.2