The Mayor shall establish the date, time and place for the first meeting each year, at which meeting the commissions and boards shall organize under a Chairman and Secretary elected from among its members for a term of one year. Meetings shall be called by the Chairman at least once a year or as otherwise required by the provisions of the Charter and at such times as its members may determine. There shall be a fixed place of meeting, all meetings shall be open to the public, the meeting time and place shall be posted in accordance with the provisions of the Charter, and a record shall be kept showing the vote of each member on each question. The presence of the majority of members shall be necessary to constitute a quorum.