If the urgency of the case so requires, the Hearing Panel may make an interim order on the request of a party before the observations of the other parties have been submitted, and without notice to those other parties, but in such a case the Hearing Panel shall require notice of the request and of the order to be given forthwith to all parties who are affected by the order, and any party who is so affected may request the Hearing Panel to set aside or vary the order.