S.C. Code Ann. § 50-23-350

The department may issue any certificate of number directly or may authorize any person to act as agent for the issuing thereof. In the event that a person accepts such authorization, he may be allotted a block of numbers and certificates therefor which upon assignment and issue in conformity with this chapter and with any rules and regulations of the department adopted pursuant to this chapter shall be valid as if assigned and issued directly by the department.