S.C. Code § 48-17-20
The Authority shall be composed of thirteen members who shall be appointed by the Governor. The original members shall be the present commissioners of the Crossroads of History Resource, Conservation and Development Project. There shall be two members from each county, and one member at large.
The terms of office shall be for four years, except of those initially appointed, one member from each county, and the member at large, shall be appointed for two-year terms.
The organizational meeting shall be called by the present chairman of the Crossroads of History Resource, Conservation and Development Project as soon as all members have been appointed and qualified. Upon the expiration of any member's term, or should a vacancy occur, the remaining members shall make recommendations for appointment to the Governor.
S.C. Code § 48-17-20