US lawCaliforniaStatutesCode probDivision 9Part 3Chapter 1Article 215620Cal. PROB § 15620Cal. PROB § 15620Last amended: 1990Year: 2025Length: 23 wordsOfficial source Unless otherwise provided in the trust instrument, a power vested in two or more trustees may only be exercised by their unanimous action.NextCal. PROB § 15621