I. Meetings of the heritage commission, the historic district commission, the agricultural commission, the housing commission, the building code board of appeals, and the zoning board of adjustment shall be held at the call of the chairperson and at such other times as the board may determine.
II. The planning board shall hold at least one regular meeting in each month.
III. A majority of the membership of a local land use board shall constitute the quorum necessary in order to transact business at any meeting of a local land use board.