Artikel 21

An application to make arrangements for organizing or securing the effective exercise of rights of access may be presented to the Central Authorities of the Contracting States in the same way as an application for the return of a child.
The Central Authorities are bound by the obligations of co-operation which are set forth in Article 7 to promote the peaceful enjoyment of access rights and the fulfilment of any conditions to which the exercise of those rights may be subject. The Central Authorities shall take steps to remove, as far as possible, all obstacles to the exercise of such rights.
The Central Authorities, either directly or through intermediaries, may initiate or assist in the institution of proceedings with a view to organizing or protecting these rights and securing respect for the conditions to which the exercise of these rights may be subject.