A trust amendment form is a legal document you use to make changes to your revocable trust. It isn't meant to change your trust document as a whole.California Trust Amendment Form. Utilize our Trust Amendment form to implement modifications to a Revocable Living Trust. You can use our trust amendment document builder and free templates to amend your living trust. The simplest way to make a change to a living trust is with a trust amendment form. A living trust amendment allows you to make changes to an existing trust. How to fill out the Quitclaim Deed Trust Form for Real Estate in Illinois? 1. Gather necessary details about the parties and property. 2. Amend an Existing Trust – Contingent Beneficiaries?