Mich. Comp. Laws § 730.413: Charge of jury.

Sec. 13.

Any deputy sheriff of the county or police officer of the city in which a court drawing a jury by virtue of the provisions of this act is situated, or any duly authorized process server of such court, may be authorized by the justice or judge conducting the trial to have charge of the jury. Before entering upon such duty, the justice or judge shall administer to such officer the same oath that a person having charge of a jury in a jury trial in justice court in this state is or may by law be required to take.