(1) This section applies if:
(a) an arbitral tribunal makes an award for the payment of an amount of money; and
(b) under the award, the amount is to be paid by a particular day (the due date ).
(2) The arbitral tribunal may direct that interest, including compound interest, is payable if the amount is not paid on or before the due date.
(3) The arbitral tribunal may set a reasonable rate of interest.
(4) The interest is payable:
(a) from the day immediately following the due date; and
(b) on so much of the amount as remains unpaid.
(5) The direction is taken to form part of the award.