(5)To be able to perform all college activities, the group supervisor and the members of the college of supervisors should have an overview of the activities carried out by all entities of the investment firm group concerned, including the activities of those entities that carry out financial activities without being qualified as investment firms, and the activities of those entities that operate in third countries. For the same reason, interaction should be promoted between the group supervisor, the college members, public authorities or bodies in a Member State that are responsible for or involved in the supervision of any entity of the investment firm group, including competent authorities of host Member States where branches assessed as important are established, authorities or bodies that are responsible for the supervision of markets in financial instruments and for the prevention of the use of the financial system for money laundering and terrorism financing, authorities or bodies that are responsible for consumer protection, and resolution authorities. It is therefore important that those public authorities or bodies are allowed to participate in the work of the college of supervisors as observers, where appropriate.