S.C. Code § 31-15-110
Any municipality adopting an ordinance under the provisions of this article may establish a commission composed of not less than three nor more than seven duly qualified electors of such municipality, to exercise any of the powers authorized to be granted to the public officer by the terms of this article. The members of this commission shall be appointed by the mayor with approval of a majority of the council or governing body of the municipality and shall serve for such term and compensation as designated by the ordinance. The commission shall exercise the powers prescribed by the ordinance and formulate the rules of procedure before it; provided, that a majority of the members thereof must be present for the conduct of its business, and decisions must be by majority vote of the members present.
S.C. Code § 31-15-110