111.1. Where an advocate represents two or more recipients who are legally or de facto joined and are parties to a dispute based on a cause of action of the same nature and heard before the same court or the same administrative body at or about the same time, the fees set for representing one recipient are increased by the following percentage:(1) if there are two recipients: 50%;
(2) if there are three recipients: 100%;
(3) if there are four recipients: 150%;
(4) if there are five or more recipients: 200%.