Va. Code § 63.2-302
The local board serving a single county shall be, at the discretion of the governing body of the county, either a local government official or a local board consisting of residents of the county who are, except as provided in § 63.2-303, appointed by the governing body of the county. If residents of the county constitute the local board, such board shall consist of three or more members. The governing body shall appoint a member of the board of supervisors to be one member of the local board, except in those cases where the board of supervisors has determined otherwise. When a member of the board of supervisors who was appointed as a member of the local board ceases to be a member of the board of supervisors, his office as a member of the local board shall also be vacated and another member of the board of supervisors shall be appointed to fill such vacancy.
If a local government official constitutes the local board, he may designate a senior staff person in the local department to act in his behalf, in his absence, to approve, cancel or change grants made under the provisions of this title.
Va. Code § 63.2-302