By way of derogation from Articles R. 561-23 and R. 561-24, the persons mentioned in 1° to 6° and 7°a of Article L. 561-2 who belong to the same group within the meaning of Article L. 561-33 may agree, in agreement with their parent undertaking or their central body, to the joint appointment of a person within the group. The person so authorised must carry out his duties in France. The group shall communicate the identity of this person to the department referred to in Article L. 561-23 and to each supervisory authority concerned.