3. Where appropriate and without prejudice to the responsibility and accountability of the ECB for the tasks conferred on it by this Regulation, national competent authorities shall be responsible for assisting the ECB, under the conditions set out in the framework mentioned in paragraph 7 of this Article, with the preparation and implementation of any acts relating to the tasks referred to in Article 4 related to all credit institutions, including assistance in verification activities. They shall follow the instructions given by the ECB when performing the tasks mentioned in Article 4.