The county legislative body is also authorized to create a board of zoning appeals to make special exceptions to zoning regulations, assist in settling boundary line disputes, interpret zoning maps, and consider similar questions.  T.C.A. §§ 13-7-106 through 13-7-109.  The county legislative body appoints three, five, seven or nine regular members of the appeals board, along with one or more associate members who can sit for regular members under some temporary disability.  A joint board of zoning appeals may be appointed by two or more counties. Compensation and length of terms are determined by the county legislative body within certain statutory guidelines.  Vacancies are filled for the unexpired term and in the same manner as the original appointments.  The county legislative body may remove any member for cause upon written charges and after a public hearing, and may specify rules governing organization, procedure, and jurisdiction of the board.  T.C.A. § 13-7-106.  The board of zoning appeals may also adopt supplemental rules of procedure if these are consistent with state statutes and rules adopted by the county legislative body.  T.C.A. § 13-7-107. Land use decisions made by the board of zoning appeals, other than variances, must be consistent with the regional plan if the county legislative body adopts the general regional plan in the form of a resolution. T.C.A. § 13-3-304.