Each member of the Board of Appeals shall complete, at a minimum, four hours of training each year designed to enable such members to more effectively carry out their duties. Training received by a member in excess of four hours in any one year may be carried over by the member into succeeding years in order to meet the requirements of this subsection. Such training shall be approved by the Board of Trustees and may include, but not be limited to, training provided by a municipality, regional or county planning office or commission, county planning federation, state agency, statewide municipal association, college or other similar entity. Training may be provided in a variety of formats, including, but not limited to, electronic media, video, distance learning and traditional classroom training.