Section 12-306 - Vesting of powers; quorum; votes on action(a) The powers of each authority are vested in the commissioners.(b) A quorum is: (1) three commissioners of a five-member authority;(2) four commissioners of a seven-member authority; or(3) five commissioners of a nine-member authority.(c) An authority may take action on a vote of a majority of the commissioners present at a meeting at which there is a quorum, unless a larger number is required by law or the bylaws of the authority.