Michigan Compiled Laws, Chapter 213. Condemnation § 213.184

Sec. 14. The court commissioners shall meet at the time and place ordered by the court and shall be sworn faithfully to discharge their duties. If all do not then appear, a less number may adjourn to a time certain, but no adjournment shall be made to a day later than the time allowed by the court. All adjournments shall be publicly announced. The court or the clerk thereof may issue writs of subpoena to compel the attendance of witnesses before the court or before the said court commissioners. Either of such court commissioners may administer oaths to witnesses.