At its first meeting the commission shall elect a chairman and vice chairman, and determine the time, place and frequency of its meetings. The commission may adopt rules of procedure for the conduct of its business and may do any other thing necessary or proper to carry out its functions. The term of office for the chairman and vice chairman shall be the calendar year, or for that portion remaining after they are appointed or elected. When there is a vacancy in the office of chairman or vice chairman, the commission shall fill said office from among its members for the unexpired term. (Prior code § 60.11.095)