(1) If the decedent's will directs supervised administration, it shall be ordered unless the court finds that circumstances bearing on the need for supervised administration have changed since the execution of the will and that there is no necessity for supervised administration.
(2) If the decedent's will directs unsupervised administration, supervised administration shall be ordered only upon a finding that it is necessary for protection of persons interested in the estate.
(3) In other cases if the court finds that supervised administration is necessary under the circumstances.