S.C. Code Ann. § 33-1-103

A corporation or partnership, as defined in this section, may designate an employee or principal of the corporation or partnership to represent it in magistrates' court. This designation must be in writing and must be submitted to the magistrate at the time the initial pleading in the case is filed by the party. Notwithstanding the provisions of Chapter 5 of Title 40 or any other provision of law, the person so designated, while representing the corporation or partnership in magistrates' court, is not engaging in the unauthorized practice of law. As used in this section, a corporation or partnership is defined as a general partnership, a limited liability partnership, a limited liability company, a limited partnership, a professional association, a professional corporation, a nonprofit corporation, a business corporation, or a statutory close corporation.