The child's counsel or the prosecuting attorney may serve on the other party and file with the court administrator a notice to remove a particular referee assigned to a trial or hearing in the same manner as a judge may be removed under Rule 22. After a party has once disqualified a referee as a matter of right, that party may disqualify the substitute judge or referee only upon an affirmative showing of cause.
Minn. R. Juv. P. 23.03