78Use of assistants and equipment

78 Use of assistants and equipment (1) An authorised person may exercise powers under this part with the aid of the assistants and equipment that the person considers reasonably necessary in the circumstances. (2) Powers that may be exercised by an authorised person under this part may be exercised by an assistant authorised and supervised by the authorised person, but only if the authorised person considers that it is reasonably necessary in the circumstances that the powers be exercised by an assistant.