The Zoning Board of Appeals shall consist of five (5) regular members and three (3) alternate members who shall be electors of the Town and who shall be appointed by the Board of Directors. The Zoning Board of Appeals as constituted at the time of approval of this Charter amendment by the electorate shall continue in office and, as the term of office of each member expires, the Board of Directors shall appoint a successor for a term of five (5) years.