The Board of Adjustment shall consist of two members selected by the Council, two members selected by the County Board of Supervisors; and, one additional member to act as Chairperson and to be selected by a majority vote of the members selected by the Council and the County Board of Supervisors. Members are removable for cause by the appointing authority upon written charges, after a public hearing. Vacancies are filled for the unexpired term of any member whose office becomes vacant in the same manner in which the member was selected. The terms of the members are for five years and are staggered.