1. Within 10 working days of receipt of an application for registration under Article 15, the competent authority of the home Member State, or, in the case of a group of credit rating agencies, the competent authority of the home Member State of the credit rating agency mandated under Article 15(2), shall establish a college of competent authorities in order to facilitate the exercise of the tasks referred to in Articles 4, 5, 6, 16, 17, 20, 24, 25 and 28.
2. The college shall comprise the competent authority of the home Member State and the competent authorities referred to in paragraph 3 in the case of a single agency, or the competent authorities of the home Member States and the competent authorities referred to in paragraph 3 in the case of a group of rating agencies.
3. A competent authority other than the competent authority of the home Member State may at any time decide to become a member of the college provided that:
(a) a branch which is a part of the credit rating agen