Distinguish the chapter 55-1B offices
South Dakota identifies several advisor offices and a protector; “advisor” is not one universal role.
Section 55-1B-1 defines the principal offices. Sections 55-1B-9 through 55-1B-13 separately address investment, distribution, and tax trust advisors and the family advisor. Under § 55-1B-10, investment authority can include retention, purchases and sales, voting, and management; distribution authority appears in § 55-1B-11. The instrument creates and authorizes the tax trust advisor office, while § 55-1B-13 supplies additional listed tax powers unless the instrument prohibits them.
One individual may hold multiple offices where the document allows it, but overlapping roles deserve a conflict review. Control of a family company, discretion over payments to an employee-beneficiary, and power over related tax elections can collide. Every written direction should name the capacity being used.
The office framework appears in SDCL §§ 55-1B-1 and 55-1B-9 through 55-1B-13.