S.D. Codified Laws § 47-14A-24
Except to the extent otherwise provided in the governing instrument of a business trust, the business and affairs of a business trust shall be managed by or under the direction of its trustees. To the extent provided in the governing instrument of a business trust, any person (including a beneficial owner) shall be entitled to direct the trustees or other persons in the management of the business trust. Except to the extent otherwise provided in the governing instrument of a business trust, neither the power to give direction to a trustee or other persons nor the exercise thereof by any person (including a beneficial owner) may cause such person to be a trustee. To the extent provided in the governing instrument of a business trust, neither the power to give direction to a trustee or other persons nor the exercise thereof by any person (including a beneficial owner) may cause such person to have duties (including fiduciary duties) or liabilities relating thereto to the business trust or to a beneficial owner thereof.
SDCL 47-14A-24