Cal. PROB § 2327

(a) In a conservatorship proceeding, the court shall order a separate bond for each conservatee, except where the assets of the conservatees are commingled in which case a combined bond that covers all assets may be provided. (b) If a guardianship proceeding involves more than one ward, the court may order separate bonds, or a single bond which is for the benefit of two or more wards in that proceeding, or a combination thereof.