Immediately upon the occurrence of facts making it necessary or appropriate to increase the amount of the bond, the personal representative, or the guardian or conservator of the estate, must make an ex parte application for an order increasing the bond.
If the personal representative, or the guardian or conservator of the estate, has not already made application under (a), the attorney for the personal representative, or the attorney for the guardian or conservator of the estate, must make the ex parte application immediately upon becoming aware of the need to increase bond.
Cal. R. Ct. 7.204