S.D. Codified Laws § 36-21A-141.1
A real estate brokerage entering into an agency agreement may, through the responsible broker, appoint to the client those licensees affiliated with the brokerage who will act as appointed agents of that client to the exclusion of all other licensees affiliated with the brokerage. The appointment shall be in writing. A responsible broker is not a limited agent solely because the broker makes an appointment pursuant to this section. However, any licensee who personally represents both the seller and buyer or both the landlord and tenant in a particular transaction is a limited agent and shall comply with the provisions governing limited agents.
When an agent is appointed pursuant to this section, each client, the real estate brokerage, and any appointed licensee is considered to possess only actual knowledge and information. There is no imputation of knowledge or information by operation of law among or between the client, the real estate brokerage, and the appointed agent.
The commission shall promulgate rules pursuant to chapter 1-26 to establish appointed agent procedures regarding disclosure and confidentiality.
SDCL 36-21A-141.1