California Code, Government Code - GOV § 50274

(a) At the first organizational meeting of a city selection committee held pursuant to Section 50273, it shall select from among its members a permanent chairman and vice chairman, and such other officers as it deems necessary.  The term of office of the chairman and vice chairman shall be not less than one year nor more than four years as determined in the rules and regulations adopted by a city selection committee pursuant to Section 50275.  At least 60 days prior to the expiration of the term of office of the chairman and vice chairman, or as otherwise provided in the rules and regulations adopted by a city selection committee pursuant to Section 50275, the city selection committee shall meet and select a successor to the chairman and to the vice chairman.

(b) The officers of the County of San Mateo's City Selection Committee may be the same as San Mateo County's Council of Cities.  Any person elected to serve as chairman, vice chairman, or officer may serve his or her entire term of office on San Mateo County's City Selection Committee, provided that the person continues to serve on a city council.  If a city selection committee officer is not a mayor, that person may preside, but not vote on any matters before San Mateo County's City Selection Committee unless authorized pursuant to Section 50271.