(1) An application for an order which, under the Probate Act or these Rules, the Court has power to make shall:
(a) where the application is in relation to a proceeding already commenced – be made by summons; or
(b) where the application is in the nature of an originating proceeding – be made by a writ or an originating motion supported by affidavit,
unless:
(c) this Part provides otherwise; or
(d) the Court otherwise orders.
(2) Subrule (1) applies to a proceeding which may be commenced under this Chapter but in respect of which no procedure for commencement is prescribed.