(1) A proceeding may be started and continued by or against one or more persons who have the same interest in the proceeding, as representing all or some of the persons who have the same interest and could have been parties to the proceeding.
(2) The applicant may apply to the Court for an order appointing one or more of the respondents or other persons to represent all or some of the persons against whom the proceeding is brought.
(3) If the Court makes an order appointing a person who is not a respondent, the order has the effect of joining the person as a respondent to the proceeding.
(4) This rule does not apply to a proceeding dealing with property that is subject to a trust or included in a deceased estate.
Note For the representation of beneficiaries in a proceeding dealing with property that is subject to a trust or included in a deceased estate, see rule 9.23.