721. Provision that may be included in rules

Rules under this Chapter may—

(a) modify or exclude any provision of any enactment or instrument, or any rule of law,
(b) apply, with such modifications as may be appropriate, the provisions of any enactment or instrument,
(c) require the payment of fees, or enable persons to require the payment of fees, of such amounts as may be specified in the rules or determined in accordance with them,
(d) empower the authority making the rules to delegate to any person willing and able to discharge them any functions of the authority under the rules.