Mont. Code Ann. § 7-35-2132

Whenever money to the amount of $100 shall have been received by such public cemetery district heretofore or hereafter formed, either from the sale of lots or from direct payments of such public cemetery district toward such a fund by lot owners, the trustees of such public cemetery district shall immediately make application to the judge of the district court of the judicial district in which the cemetery for which such trust fund exists for the appointment of a trustee or of a board of trustees of such fund.