Except as provided in (b) and subject to the right of review provided for in rule 5.542, all orders of a referee become effective immediately and continue in effect unless vacated or modified on rehearing by order of a juvenile court judge.
The following orders made by a referee do not become effective unless expressly approved by a juvenile court judge within two court days:
An order of a referee becomes final 10 calendar days after service of a copy of the order and findings under rule 5.538, if an application for rehearing has not been made within that time or if the judge of the juvenile court has not within the 10 days ordered a rehearing on the judge's own motion under rule 5.542.
Cal. R. Ct. 5.540