The members of the Board shall consist of five members who are residents of the City appointed by the City Council. Their terms of office shall be five years and shall be so fixed that the term of office of no more than one member shall expire each year. The Board shall promptly notify the City Council of any vacancies that occur. Appointments to fill vacancies shall be only for the unexpired portion of the term. Members and alternate members of the Board shall hold no other elected or appointed office in the City and shall not be an employee of the City. The Zoning Administrator or designee shall serve as the nonvoting Secretary to the Board. Newly appointed Board members should attend a minimum of four hours of zoning training within the first year of appointment. All Board members should participate in at least one zoning class or seminar during each two-year period.