Section 36.456 - Construction of ORS 36.450 to 36.558(1) Except as specified in ORS 36.508, where a provision of ORS 36.450 to 36.558 leaves the parties free to determine a certain issue, such freedom includes the right of the parties to authorize a third party, including an institution, to make that determination.(2) Where a provision of ORS 36.450 to 36.558 refers to the fact that the parties have agreed or that they may agree or in any other way refers to an agreement of the parties, such agreement includes any arbitration or conciliation rules referred to in that agreement.(3) Except as provided in ORS 36.502(1) and 36.516(2)(a), where a provision of ORS 36.450 to 36.558 refers to a claim, it also applies to a counterclaim, and where it refers to a defense, it also applies to a defense of a counterclaim.