(a) Except as provided by Subsection (a-1), the board of trustees of a community center established by an organizational combination of local agencies is composed of not fewer than five or more than 13 members.
(a-1) In addition to the members described by Subsection (a), the board of trustees of a community center must include:
(1) if the region served by the community center consists of only one county, the sheriff of that county or a representative of the sheriff to serve as an ex officio nonvoting member; or
(2) if the region served by the community center consists of more than one county, sheriffs from at least two of the counties in the region served by the community center or representatives of the sheriffs to serve as ex officio nonvoting members.

(a-2) Subsection (a-1) does not prevent a sheriff or representative of a sheriff from being included on the board of trustees of a community center as a voting member of the board.
(b) The governing bodies of the local agencies shall appoint the board members either from among the membership of the governing bodies or from among the qualified voters who reside in the region to be served by the center.
(c) When the center is established, the governing bodies shall enter into a contract that stipulates the number of board members and the group from which the members are chosen. They may renegotiate or amend the contract as necessary to change the:
(1) method of choosing the members; or
(2) membership of the board of trustees to more accurately reflect the ethnic and geographic diversity of the local service area.