(8)An order made by His Majesty in Councilor the Governor-General under this section may contain directions as to the Government or persons by whom the expenses of the Commission and any costs incurred by any Province, State or persons in appearing before the Commission are to be paid, and may fix the amount of any expenses or costs to be so paid, and so far as it relates to expenses or costs, may be enforced as if it were an order made by the Federal Court.