Idaho Code § 15-8-302
Sections 15-8-301 through 15-8-305, Idaho Code, shall be applicable to the resolution of any matter, as defined in section 15-8-103, Idaho Code, other than matters subject to chapter 5, title 15, Idaho Code, or a trust for a minor or other incapacitated person created at its inception by the judgment or decree of a court unless the judgment or decree provides that sections 15-8-301 through 15-8-305, Idaho Code, shall be applicable. If all parties agree to a resolution of any such matter, then the agreement shall be evidenced by a written agreement signed by all parties. Subject to the provisions of section 15-8-304, Idaho Code, the written agreement shall be binding and conclusive on all persons interested in the estate or trust. The agreement shall identify the subject matter of the dispute and the parties. If the agreement or a memorandum of the agreement is to be filed with the court under section 15-8-303, Idaho Code, the agreement may, but need not, include provisions specifically addressing jurisdiction, governing law, the waiver of notice of the filing and the discharge of any special representative who has acted with respect to the agreement. If a party who virtually represents another person under section 15-8-205, Idaho Code, signs the agreement, then the party's signature constitutes the signature of all persons whom the party virtually represents, and all the virtually represented persons shall be bound by the agreement.
Idaho Code § 15-8-302