(2) At any time during the illness or absence of any Tangata Kaitiaki/Tiaki or for any other temporary purpose, the Tangata Kaitiaki/Tiaki may, with the approval of and for such period of time as agreed to by the tangata whenua who notified the Tangata Kaitiaki/Tiaki under regulation 18(2) and on prior notification to the chief executive, delegate his or her powers under these regulations to any member of the tangata whenua of that particular mātaitai reserve.