(5) The decision of the Registrar in either case shall be subject to an appeal to the Crown Attorney, who shall, if required, hear the person making the request to amend and, where notice of opposition has been given, the person giving the notice, if he or she is, in the opinion of the Crown Attorney, entitled to be heard in opposition to the request, and, where there is no opposition, the Registrar, and may make an order determining whether and subject to what conditions (if any) the amendments ought to be allowed.