657. Powers of the appropriate national authority.

The appropriate national authority is empowered to make regulations or, as the case may be, orders:

  1.  

    (1)     prescribing the form of any notice or document to be given or used under the provisions concerning rent under regulated tenancies1 and anything required or authorised to be prescribed under those provisions2;

  2.  

    (2)     prescribing the form of any notice, application, register or other document to be given, made or used under the provisions3 concerning registration of rents under regulated tenancies4, prescribing anything required or authorised to be prescribed under those provisions5, and regulating the procedure to be followed by rent officers under