Mich. Comp. Laws § 600.8541: Superintending control of district judge; limitation; functions and duties of district judge in chambers.

Sec. 8541.

The judges of the district court shall exercise superintending control over all magistrates within their districts. A district judge may not extend the jurisdiction of a district court magistrate beyond the jurisdiction expressly provided by law.

A district court judge may perform in chambers all functions and duties which a district court magistrate is authorized to perform under section 8511 or 8512a.