(1) No person shall conduct any activity on a reservation, if the activity, or the manner, time, or duration of the activity, is in contravention of, or not permitted by,—
(a) The Act or these regulations or any order of the Court, in relation to the reservation; or
(b) Any authorisation for the time being given by the trustee or trustees of the reservation.
(2) No person shall, without the prior written authorisation of the trustees of a reservation, conduct on that reservation any activity that requires, under these regulations, the prior written authorisation of those trustees.