Where two or more controllers jointly determine the purposes and means of processing, they are joint controllers. They shall, in a transparent manner, determine their respective responsibilities for compliance with the obligations under theGDPR, in particular withregards to the exercising of the rights of the data subject, and their respective duties to provide the information referred to in Articles 13 and 14. This should be done by means of an arrangement between them unless, and in so far as, the respective responsibilities of the controllers are determined by Union or Member State law to which they are subject. The arrangement may designate a contact point for data subjects.