Generally. There is hereby created a board of zoning and adjustment for the City of Garden City, Missouri. The board of zoning and adjustment shall consist of five members, who shall be freeholders. The membership of the first board appointed shall serve respectively for one year, one for two years, one for three years, one for four years, and one for five years. Thereafter, members shall be appointed for terms of five years each. All members shall be removable for cause by the appointing authority upon written charges and after public hearings. Vacancies shall be filled for the unexpired term of any member whose term becomes vacant. The board shall elect its own chairman, who shall serve for one year. The board shall adopt its own rules of procedure not inconsistent with this ordinance. Meetings of the board shall be held at the call of the chairman and at such other times as the board may determine, but not less than quarterly. Such chairman or, in his absence, the acting chairman, may administer oaths and compel the attendance of witnesses. All meetings of the board will be open to the public. The board shall keep minutes of its proceedings showing the vote of each member upon [each] question or, if absent or failing to vote, indicating such fact, and shall keep records of its examinations and other official actions, all of which shall be immediately filed in the office of the city clerk of the City of Garden City, Missouri, and shall be a public record. All testimony, objections thereto, and rulings thereon shall be taken down by a reporter employed by the board for that purpose.