Cal. R. 3.506
An assigned judge may at any time request that the parties on each side of the included or coordinated actions select one or more of the attorneys of record on that side for appointment as liaison counsel, and may appoint liaison counsel if the parties are unable to agree.
Unless otherwise stipulated to or directed by an assigned judge, the appointment of a liaison counsel by a coordination motion judge terminates on the final determination of the issue whether coordination is appropriate. For good cause shown, the coordination motion judge, on the court's own motion or on the motion of any party, may remove previously appointed counsel as liaison counsel.
Except as otherwise directed by the assigned judge, any party that has made a written request for special notice must be served with a copy of any document thereafter served on the party's liaison counsel.
Cal. R. Ct. 3.506