(a) The management and control of a joint system is vested in a commission. The governing body of each voting member of a joint system shall appoint a representative who must be a commissioner of the joint system. The representative may be an officer or employee of the member and may also serve ex officio as a member of the commission. Each commissioner has one vote and may have additional votes as a majority of the members of the joint system determines. Each commissioner shall serve at the pleasure of the governing body by which he was appointed. Each appointed commissioner, before entering upon his duties, shall take and subscribe to an oath before a person authorized by law to administer oaths to execute the duties of his office faithfully and impartially, and a record of each oath must be filed with the governing body of the appointing authority.

If the commissioners unanimously designate any member for additional representation, then the governing body of any member designated is entitled to appoint up to two additional representatives to be commissioners of the joint system. These additional commissioners have the same power and authority and are subject to the same limitations as the commissioners initially appointed. Once the membership of a commission has been increased in this manner, the additional votes provision of the preceding paragraph no longer applies to the commission.