(1) A person entitled in priority to a grant of letters of administration may, without leave, apply for a grant with a person entitled in a lower degree, if there is no other person entitled in a higher degree to the person to be joined, unless every person has renounced his or her right or gives consent or has consented.
(2) Where subrule (1) does not apply, an application to join another person shall be made to the Court.
(3) An application under subrule (2) may be made without notice but must be supported by evidence on affidavit and the consent of the person proposed to be joined as administrator.