13. Where an advocate represents 2 or more persons charged with the same offence or with a like offence arising from the same course of events, and where the proceedings are held in the same court at or about the same time, the advocate is entitled to a total remuneration equivalent to the remuneration payable to represent 1 person, increased by the following percentage according to the number of represented persons:(1) 2 persons: 50%;
(2) 3 persons: 100%;
(3) 4 persons: 150%;
(4) 5 persons or more: 200%.