S.D. Codified Laws § 12-22-10

Whenever it shall appear that substantial rights may be lost or impaired by delay, the court may, at any time after the contest is commenced, upon application of any party, and upon reasonable notice to the other party or parties, make such order or orders as the court deems necessary to bring about the expeditious and just determination of the contest, including the shortening of the time for answer, the time, manner, and method of taking depositions, reference to a referee or referees, including power to appoint different referees for different purposes, and directing that when feasible the taking of evidence on depositions or before referees may proceed simultaneously, safeguarding the right of each party to be represented, if he so desires, in all such proceedings.