Mich. Comp. Laws § 50.63: County clerk; deputies, appointment.

Sec. 63.

Each county clerk shall appoint 1 or more deputies, to be approved by the circuit judge, 1 of whom shall be designated in the appointment as the successor of such clerk in case of vacancy from any cause, and may revoke such appointment at his pleasure, which appointment and revocation shall be in writing, under his hand, and filed in the office of the county treasurer, and the deputy or deputies, may perform the duties of such clerks.