5. In the context of consolidated supervision and colleges of supervisors, in circumstances where a parent undertaking is established in a euro area Member State or in a non-euro area participating Member State, the ECB, as competent authority, shall be the consolidating supervisor and shall chair the college of supervisors. The ECB shall invite the relevant NCA in close cooperation to appoint an NCA staff member as observer. The ECB may act by giving instructions to the relevant NCA in close cooperation.