S.C. Code Ann. § 40-75-50

In addition to the powers and duties enumerated in Section 40-1-50, the board shall, at the first board meeting in each calendar year elect from the professional membership a president, a vice president, and any other officer it considers necessary. Regular meetings must be held upon the call of the president or any two members of the board. A majority of the members of the board constitutes a quorum.