S.D. Codified Laws § 36-18A-47
Any office physically located and maintained in this state to offer engineering, architectural, land surveying, landscape architectural, petroleum release assessment, or petroleum release remediation services shall have an appropriately licensed person who is regularly employed in that office and who has responsible charge and direct supervision and control of all professional services. No licensee who renders occasional, part-time, or consulting services to or for an office may be designated as the appropriately licensed person in responsible charge for the professional activities of the office unless a schedule is posted at the office for the public's knowledge and filed with and approved by the board stating when the licensee is physically in the office.
SDCL 36-18A-47