All official acts of the Authority shall require the affirmative vote of at least 6 members of the Board at a meeting of the Board at which the members casting those affirmative votes are present. It is the duty of the Authority to promote development within its territorial jurisdiction. The Authority shall use the powers conferred on it by this Act to assist in the development, construction, and acquisition of industrial or commercial projects within its territorial jurisdiction.
6 members shall constitute a quorum, and the Board may not meet or take any action without a quorum present.
70 ILCS 508/20