Miss. Code § 43-33-7
When the governing body of a city adopts a resolution as provided in Section 43-33-5, such governing body shall forthwith appoint five (5) persons as commissioners of the authority created for said city. When the governing body of a county adopts a resolution as provided in Section 43-33-5, said governing body shall appoint five (5) commissioners for said board created for said county. The commissioners who are first appointed shall be designated to serve for terms of one (1), two (2), three (3), four (4) and five (5) years, respectively, from the date of their appointment, and thereafter when a vacancy shall occur either by the expiration of term of office or otherwise, the vacancy shall be filled by the governing body of the city or county, as the case may be, either to fill an unexpired term where a commissioner shall die or resign or shall become disqualified during his term, or for a full term of five (5) years where the term of a commissioner expires. No commissioner of an authority may be an officer or employee of the city or county for which the authority is created. However, at least one (1) commissioner must be a person who is directly assisted by the authority if required under applicable federal law. A commissioner shall hold office until his successor has been appointed and has qualified. A certificate of the appointment or reappointment of any commissioner shall be filed with the clerk of the city or county as the case may be and such certificate shall be conclusive evidence of the due and proper appointment of such commissioner. A commissioner shall receive compensation for his services in the manner and amount authorized in Section 25-3-69 for up to fifteen (15) days during the fiscal year of the authority, and he shall also be entitled to necessary expenses, including traveling expenses, incurred in the discharge of his duties.
The powers of each authority shall be vested in the commissioners thereof in office from time to time. Three (3) commissioners shall constitute a quorum of the authority for the purpose of conducting its business and exercising its powers and for all other purposes. Action may be taken by the authority upon a vote of a majority of the commissioners present, unless in any case the bylaws of the authority shall require a larger number. The board of commissioners shall elect which member shall be chairman and thereafter fill any vacancy by like election. An authority shall select from among its commissioners a vice chairman, and it may employ a secretary (who shall be executive director), technical experts and such other officers, agents and employees, permanent and temporary, as it may require, and shall determine their qualifications, duties and compensation. For such legal services as it may require, an authority may call upon the chief law officer of the city or the county or may employ its own counsel and legal staff. An authority may delegate to one or more of its agents or employees such powers or duties as it may deem proper.
In the event that a directly assisted commissioner ceases to be directly assisted by the authority for which he/she serves as commissioner, said person shall then become disqualified to serve that authority as a directly assisted commissioner and shall be replaced as commissioner by a person who is directly assisted by the authority if federal law then requires that authority to have a directly assisted commissioner.
Miss. Code § 43-33-7