The board shall elect a chair, a vice-chair, a secretary, a treasurer, and other necessary officers to accomplish the purposes of the authority. The tenure of service as chair, vice-chair, and secretary shall be one year. The tenure of service as treasurer and other officers shall be determined by the board. Subject to the certificate of incorporation, the authority may employ all necessary personnel and set the terms and conditions of their employment. The duties of the chair, vice-chair, secretary, and treasurer shall be the same as are customarily performed by those officers and as may be prescribed by the board. The duties of any other officer of the authority shall be prescribed by the board.