(1) An application by a litigation representative for approval of an agreement must be made by filing an interlocutory application.
(2) The interlocutory application must be accompanied by the following:
(a) an affidavit stating the material facts on which the application relies;
(b) the agreement that is sought to be approved;
(c) an opinion of an independent lawyer that the agreement is in the best interests of the person under a legal incapacity.