If counsel in a case listed for trial expects to be unavailable on a particular day or days on which the case could be called for trial, he shall make application to the assigned Judge of the Court of Common Pleas, after advance reasonable written or oral notice of intention so to do to opposing counsel, to excuse him for that day or days. The Common Pleas Judge shall determine whether or not counsel has valid reason for being unavailable and shall either refuse or grant the request to be excused.
Berk. Cnty. Pa. 63