For the purpose of administration of the system there is hereby established a retirement committee, which shall be the members of the city council of the city of Okmulgee, Oklahoma, as now existing or as from time to time duly elected or appointed and constituted. The powers and duties of the committee shall be as set forth in the system instrument attached to the ordinance codified in this article as exhibit A. (Ord. 1763 § 1, 2000)