(1) Applications appropriate for a preliminary hearing are applications for any order or direction that the Supreme Court should determine before it determines the application for a parentage order or other principal application.
(2) Applications appropriate for a preliminary hearing include applications relating to the following--(a) joinder of a party,(b) giving notice of proceedings to any person,(c) appointing a guardian ad litem or amicus curiae,(d) whether the application for a parentage order should not be dealt with under rule 56A.4(1).