Rule 19 When notice of order to be served

Where in any proceedings for—

an order has been made, [^f1 the judge or district judge as the case may be] may direct that any persons interested in the estate or under the trust or in the property shall be served with notice of the order.

Any person so served shall be bound by the proceedings as if he had originally been made a party and shall be at liberty to attend the proceedings and may at the next sitting of the court after service, or by leave of [ the judge or district judge as the case may be] at any subsequent sitting, apply to [ the judge or district judge as the case may be] to discharge, vary or add to the order.