Petitions for a grand jury shall be presented to the chief judge and submitted by him or her to the bench for decision. No such petition shall be granted except by affirmative majority action of the bench. If a one-man grand jury is called, the judges of the circuit, by majority action, shall designate the judge who shall act as the grand juror.
Mich. L. Ct. R. Cir. Ct. 6.107