S.C. Code § 1-17-60
The Commission shall establish such committees as it deems advisable to conduct conferences and to formulate proposals concerning subjects of intergovernmental cooperation. Subject to the approval of the Commission the members of every such committee shall be appointed by the chairman of the Commission. State officials who are not members of the Commission may be appointed as members of any such committee but at least one member of the Commission shall be a member of every such committee. The Commission may provide such rules as it considers appropriate concerning the membership and functioning of any committee which it establishes. The Commission may provide for advisory boards for itself and for its various committees and for the service of private citizens on such boards.
S.C. Code § 1-17-60