No action shall be taken at any meeting of the Landmarks Preservation Commission without a quorum being present, said quorum to be the majority of the full authorized membership of the Commission. All action shall be taken by a majority vote of the members of the Commission present at the meeting. All meetings of the Landmarks Preservation Commission shall be open to the public except, as provided in the Open Public Meetings Law, P.L. 1976, c.231. Notice of such meetings shall be given in accordance with the requirements of the Open Public Meetings Law.