(1) At any time during a civil proceeding:
(a) the Attorney - General, on the Commonwealth's behalf; and
(b) the parties to the proceeding, or their legal representatives on their behalf;
may agree to an arrangement about the disclosure, protection, storage, handling or destruction, in the proceeding, of national security information.
(2) The court may make such order (if any) as it considers appropriate to give effect to the arrangement.