S.D. Codified Laws § 22-24A-11
Two or more persons may join in one action under §§ 22-19A-1, 22-24A-1 to 22-24A-20, inclusive, 22-24B-1, 22-49-1 to 22-49-3, inclusive, 23A-27-14.1, and 43-43B-1 to 43-43B-3, inclusive, as plaintiffs if their respective actions have at least one common occurrence of proscribed conduct under §§ 22-19A-1, 22-24A-1 to 22-24A-20, inclusive, 22-24B-1, 22-49-1 to 22-49-3, inclusive, 23A-27-14.1, and 43-43B-1 to 43-43B-3, inclusive, and if any portion of the period of such conduct overlaps with the period for every other plaintiff. Two or more persons may be joined in one action under §§ 22-19A-1, 22-24A-1 to 22-24A-20, inclusive, 22-24B-1, 22-49-1 to 22-49-3, inclusive, 23A-27-14.1, and 43-43B-1 to 43-43B-3, inclusive, as defendants if those persons are liable to at least one plaintiff.
SDCL 22-24A-11