There shall be the Civil Service Board of the City of Anniston, which shall be composed of three members. The members serving on October 2, 1975, shall serve out the terms for which they, respectively, have been theretofore appointed. Their successors, each, shall be appointed for terms of six years by the senator and the representative representing the City of Anniston in the Alabama Legislature. No person shall be appointed to the board who is not a resident and qualified elector of the City of Anniston and over the age of 21 years. No member of the board shall hold any office of profit under the city. If any person actively solicits a position on the civil service board, that shall disqualify him or her from being appointed. Members of the board shall take the constitutional oath of office, which shall be filed in the office of the judge of probate. Vacancies on the board shall be filled, within 30 days after the vacancy occurs, for the unexpired term by the senator and the representative representing the City of Anniston in the Alabama Legislature in the same manner as original appointments. The members of the board shall elect a chairman and secretary from among their number. Any member of the board who becomes a candidate for or is elected to another public office vacates his or her office as a member of the board, and the mayor or other chief executive officer of the City of Anniston shall forthwith notify the senator and the representative, representing the City of Anniston in the Alabama Legislature, who shall fill the vacancy as provided in this section.