2B. (1) The meetings of the Authority shall be held at such times and places as may be prescribed by rules: Provided that, until so prescribed, such meetings shall be held at such times and places as may be determined by the Chairman. (2) To constitute a quorum at a meeting of the Authority, the number of members present shall be two, if the Authority consists of not more than three members, and three, if the authority consists of more than three members. (3) All meetings of the Authority shall be presided over by the Chairman and, in his absence, by a member authorised in writing by the Chairman in this behalf. (4) At a meeting of the Authority, each member shall have one vote and, in the event of equality of votes, the person presiding shall have a second or casting vote. (5) No act or proceeding of the Authority shall be invalid or be called in question on the ground of any vacancy in, or any defect in the constitution of, the Authority.