(1) A Designated Authority for a State has, in relation to the Commonwealth - State offshore area for that State, the functions and powers that this Act confers on a Designated Authority.
(2) A State Minister acting on behalf of the responsible State Minister may perform the functions and exercise the powers that the responsible State Minister has in the capacity of Designated Authority for a Commonwealth - State offshore area.
(3) The Designated Authority for an external territory offshore area has, in relation to the external territory offshore area, the functions and powers that this Act confers on a Designated Authority.
(4) A Commonwealth Minister acting on behalf of the responsible Commonwealth Minister may perform the functions and exercise the powers that the responsible Commonwealth Minister has in the capacity of Designated Authority of an external territory offshore area.