1. If it be made to appear to the Court that the plaintiff is from any cause unable to effect prompt personal service, or such other service as is prescribed by these Rules, the Court may make an order for substituted or other service, or for the substitution for service of notice by advertisement or otherwise.

2. Every application to the Court for an order for substituted or other service, or for the substitution for service of notice, shall be supported by an affidavit setting forth the grounds upon which the application is made.

3. Whenever any such order shall be made a copy thereof shall be served along with the summons or the notice as the case may be.