S.C. Code Ann. § 48-9-1240: Chairman; quorum; majority vote; compensation.

The commissioners shall designate a chairman and may, from time to time, change such designation. A majority of the commissioners shall constitute a quorum and the concurrence of a majority of the commissioners in any matter within their duties shall be required for its determination. A commissioner shall receive no compensation for his services, but he shall be entitled to expenses, including travel expenses, necessarily incurred in the discharge of his duties.