—(1) If the third party enters an appearance in Form 19, the defendant who issued third party notice must, by summons in Form 20 to be served on all the other parties to the action, apply to the Court for directions.
(2) If no summons is served on the third party under paragraph (1), the third party may, not earlier than 7 days after entering an appearance, by summons in Form 20 to be served on all the other parties to the action, apply to the Court for directions or for an order to set aside the third party notice.
(3) On an application for directions under this Rule the Court may —
if the liability of the third party to the defendant who issued the third party notice is established on the hearing, order such judgment as the nature of the case may require to be entered against the third party in favour of the defendant;
order any claim, question or issue stated in the third party notice to be tried in such manner as the Court may direct; or
dismiss the application and terminate the proceedings on the third party notice; and may do so either before or after any judgment in the action has been signed by the plaintiff against the defendant.
(4) On an application for directions under this Rule the Court may give the third party leave to defend the action, either alone or jointly with any defendant, upon such terms as may be just, or to appear at the trial and to take such part therein as may be just, and generally may make such orders and give such directions as appear to the Court proper for having the rights and liabilities of the parties most conveniently determined and enforced and as to the extent to which the third party is to be bound by any judgment or decision in the action.
(5) Any order made or direction given under this Rule must be in Form 21 and may be varied or rescinded by the Court at any time.