Cal. R. 3.932
A motion or application to seal records in a case pending before a referee must be filed with the court and served on all parties that have appeared in the case and the referee. The motion or application must be heard by the trial court judge to whom the case is assigned or, if the case has not been assigned, by the presiding judge or his or her designee. Rules 2.550 and 2.551 apply to the motion or application to seal the records.
A motion for leave to file a complaint for intervention in a case pending before a referee must be filed with the court and served on all parties and the referee. The motion must be heard by the trial court judge to whom the case is assigned or, if the case has not been assigned, by the presiding judge or his or her designee. If intervention is allowed, the case must be returned to the trial court docket unless all parties stipulate in the manner prescribed in rule 3.901 to proceed before the referee.
Cal. R. Ct. 3.932