(1) An adult may not be involuntarily committed to the custody of a local mental health authority except under the following provisions:
(a) emergency procedures for temporary commitment upon medical or designated examiner certification, as provided in Subsection 26B-5-331(1)(a);
(b) emergency procedures for temporary commitment without endorsement of medical or designated examiner certification, as provided in Subsection 26B-5-331(1)(b); or
(c) commitment on court order, as provided in Section 26B-5-332.
(2) A person under 18 years old may be committed to the physical custody of a local mental health authority only in accordance with the provisions of Part 4, Commitment of Persons Under Age 18.