Utah Code § 81-5-612
§ 81-5-612. Minor child as party -- Representation.
(1) A minor child is a permissible party, but is not a necessary party to a proceeding under this part. (2) The tribunal may appoint an attorney guardian ad litem under Sections 78A-2-703 and 78A-2-803, or a private attorney guardian ad litem under Section 78A-2-705, to represent a minor child or an incapacitated child if the child is a party.