(a) The council shall consist of at least one representative from each member.
(b) Each representative of a member shall be:
(1) its elected chief executive; or
(2) an individual from its governing body chosen by the governing body.
(c) (1) A member may withdraw from the council by resolution of its governing body.
(2) A withdrawal may not take effect until at least 60 days after the adoption of the resolution.