Mont. Code Ann. § 50-5-1106
Resident's rights devolve to authorized representative
50-5-1106 . Resident's rights devolve to authorized representative. The rights and responsibilities listed in 50-5-1104 and 50-5-1105 devolve to the resident's authorized representative when the resident:
(1) exhibits a communication barrier;
(2) has been found by the resident's physician to be medically incapable of understanding these rights; or
(3) has been adjudicated incompetent by a district court.