Terms of office on the commission shall be four years and shall expire on December 31st of the fourth year. Members shall initially be appointed to serve for two, three or four years with the term assignments staggered so as to not to have more than one-half of the membership terminating in one year. A vacancy shall be filled by the mayor with the consent of the city council and that appointee shall serve the unexpired portion of the term. [Ord. 929 § 3 (Exh. A § 4), 2016.]