The officers of the authority shall consist of a chairman, a vice-chairman, a secretary, a treasurer and such other officers as the board shall deem necessary to accomplish the purposes for which the authority was organized. The chairman and vice-chairman shall be elected by the board from its membership, but neither the secretary, the treasurer nor any of the other officers of the authority need be a member of the board of directors. The offices of secretary and treasurer may, but need not, be held by the same person. The chairman and vice-chairman of the authority shall be elected by the board for a term of one year, and the secretary and the treasurer and the other officers of the authority shall be elected by the board for such term as it deems advisable. The board shall have also the authority to employ all personnel as it deems necessary and to fix the terms and conditions of their employment. The duties of the chairman, vice-chairman, secretary and treasurer shall be such as are customarily performed by such officers and as may be prescribed in the bylaws or by the board. The duties of any other officer of the authority shall be such as are from time to time prescribed by the board.