Unless otherwise provided in:
all corporate powers must be exercised by or under the authority of, and the business and affairs of a corporation must be managed under the direction of, a board of directors. If the authority of the board is dispensed with or limited by a provision in the articles of incorporation under (b) or by a shareholder agreement under (c), the articles or the agreement shall describe who is to perform some or all of the duties of a board of directors.
S.C. Code § 33-8-101