Mississippi Code Title 19. Counties and County Officers § 19-3-105

(1) The powers of a district shall be vested in and exercised by a board of commissioners consisting of not less than one (1) nor more than five (5) members appointed by the board of supervisors of each participating county. Each commissioner shall be either a member of the board of supervisors or an elected municipal official. Each commissioner shall be appointed and hold office for a term concurrent with the appointing authority. Any vacancy occurring on the board shall be filled by the appointing authority at a regular meeting of the board of supervisors, and unexpired terms shall be filled for the remainder of the term.

(2) Each commissioner shall take and subscribe to the oath of office prescribed in Section 268, Mississippi Constitution of 1890, before the clerk of the appointing board of supervisors that he will faithfully discharge the duties of the office of commissioner, which oath shall be filed with the clerk and by him preserved.

(3) The commissioners so appointed and qualified may be compensated for their services for each meeting of the board of commissioners attended, either regular or special, at the per diem established in Section 25-3-69, Mississippi Code of 1972, and shall be reimbursed for all expenses necessarily incurred in the discharge of their official duties as provided for state officers and employees in Section 25-3-41, Mississippi Code of 1972.

(4) The board of commissioners may appoint an executive committee, to be composed of not less than one (1) commissioner from each participating county, with a chairman to be designated by the board of commissioners. The executive committee is empowered to execute all powers vested in the full board of commissioners during the interim of the meetings of the board. A majority, plus one (1), of the members of the executive committee shall be a quorum for the transaction of business.