S.C. Code Ann. § 33-46-420

An annual meeting of the members must be held at such time as is provided in the bylaws. Special meetings of the members may be called by the president of the board of directors, by any three directors, or by not less than ten percent of the members. Meetings of members must be held at such place as may be provided in the bylaws. In the absence of any such provision, all meetings must be held in the county in which the principal office of the telephone cooperative is located.