(3)Subject to any rules that may be made in this behalf, the Claims Tribunal may, for the purpose of adjudicating upon any claim for compensation, choose one or more persons possessing special knowledge of any matter relevant to the inquiry to assist it in holding the inquiry.[(4) For the purpose of enforcement of its award, the Claims Tribunal shall also have all the powers of a Civil Court in the execution of a decree under the Code of Civil Procedure, 1908, as if the award were a decree for the payment of money passed by such court in a civil suit.]