The board of review shall be appointed by the mayor, subject to approval by a majority vote of council- and mayor-elect, and shall be comprised of three persons who are residents in the city, and have the qualifications required by this charter for officers of the city. The term of office shall be for two years. The members of the board, during their term of office, shall not be city officers, employees, nominees, or candidates for elective city office. The assessor shall be secretary of the board and shall attend its meetings prepared to present the position of his office without the right to vote upon any decision of the board.