The function of a special advocate of a party to a civil proceeding is to represent the interests of the party in the proceeding by:
(a) making submissions to the court at any part of a hearing in the proceeding during which the party and the party's legal representative are not entitled to be present; and
(b) adducing evidence and cross - examining witnesses at such a part of a hearing in the proceeding; and
(c) making written submissions to the court.