There shall be a Board of Zoning Appeals consisting of five members, one of whom shall be a member of the Municipal Planning Commission designated by it annually. The remaining four members shall each be a qualified elector of the Municipality and shall be appointed by Council to serve a term of three years except when appointed to fill a vacancy in which case to serve the unexpired term. Such terms shall be overlapping. Except as provided in this Section, the members of the Board shall hold no other municipal office or employment. The Board shall elect its own officers annually and shall follow the Rules of Procedure for Boards and Commissions provided by ordinance.