When notice is required to be given to a minor interested in an estate, as heir, devisee, or legatee, or representative of either, a guardian of the minor shall be appointed before the notice is given. Before any part of the estate is assigned to a minor, a guardian shall be appointed, although the minor has a parent living who is authorized to act as guardian. (Amended 1985, No. 144 (Adj. Sess.), § 120.)