Notwithstanding the provisions of § 63.2-306:
1. The local board for the York County and City of Poquoson district may be, at the discretion of the governing bodies of the participating city and county, the local director. If such local director serves as the local board, he may designate a senior staff person in the local department to act on his behalf, in his absence, to approve, cancel or change grants made under the provisions of this title.
2. At the discretion of the governing bodies of the participating cities and counties, the local board for a district may be composed of the chief administrative officer of each political subdivision, who may designate his principal assistant to act on his behalf, in his absence, to approve, cancel or change grants made under the provisions of this title. In addition, the provisions of § 63.2-305 shall apply.