Mont. Code Ann. § 7-15-4523

In connection with the issuance of bonds and/or the incurring of any obligation under a lease and in order to secure the payment of such bonds and/or obligations, the authority shall have power to prescribe the procedure, if any, by which the terms of any contract with bondholders may be amended or abrogated, the amount of bonds the holders of which must consent thereto, and the manner in which such consent may be given.