Rules on Civil Procedure
Section 11. Misjoinder and non-joinder of parties. - Neither misjoinder nor non-joinder of parties is ground for dismissal of an action. Parties may be dropped or added by order of the court on motion of any party or on its own initiative at any stage the action and on such terms as are just. Any claim against a misjoined party may be severed and proceeded with separately. (11a)