29. Any number of persons having interests of the same nature arising out of the same matter may be joined in the same action whether s Plaintiffs or as Defendants,
30. The Court or Judge may at any stage of the proceedings and either with or without an application for that purpose, being made by any party or person and upon such terms as shall seem just, order that the name or names of any party or parties be struck out or that the names of any person or persons who are interested in the action or who ought to have been joined either as Plaintiffs or Defendants or whose presence before the Court is necessary in order to enable the Court effectually and completely to adjudicate upon and settle all questions involved in the action be added.
31. For the purposes of the last preceding rule an underwriter or insurer shall be deemed to be a person interested in the action.
32. The Court or Judge may order upon what terms any person shall be joined as a party, and what notices and documents, if any, shall be given to and served, upon him, and may give such further directions in the matter as shall seem fit.
33. Where numerous persons having the same interest are parties to the same action, one or more of such persons may be authorized by the Court or a Judge to prosecute or defend such action on behalf of or for the benefit of all persons so interested.
34. Where by reason of death or bankruptcy or any change occurring during the continuance of an action the ‘interest or liability of any party to the action shall have devolved, upon any person or persons the Court or Judge may by order direct that the action be continued by or against the person or persons upon whom such interest or liability shall have, devolved.
Any such order if made by a Judge shall be final.