Legal Question in Wills and Trusts in California

It's tricky, as the lack of capacity for conducting one's affairs may not mean that the person lacks the capacity to amend a trust or make a will. Still, the prudent course would be to obtain a court order allowing any changes. The trust, unless it says otherwise, remains technically revocable during the settlor's incapacity. Again, though, any changes after incapacity would be suspect unless approved by a court.