Borough Council may appoint by Resolution at least one, but no more than three, residents of the Borough to serve as alternate members of the Board. The term of office of an alternate member shall be three years. When seated pursuant to the provisions of Section 1309.03, an alternate shall be entitled to participate in all proceedings and discussions of the Board to the same and full extent as provided by law for Board members, including specifically the right to cast a vote as a voting member during the proceedings, and shall have all the power and duties set forth in this Zoning Ordinance and as otherwise provided by law. Alternates shall hold no other office in the Borough, including membership on the Planning Commission and Zoning Officer. Any alternate may participate in any proceeding or discussion of the Board but shall not be entitled to vote as a member of the Board unless designated as a voting alternate member pursuant to Section 1309.03.