(1) A medical practitioner may issue a standing order in relation to the administration of a restricted substance or narcotic substance, by a registered nurse or midwife, or a registered nurse and midwife, to persons being treated in a public hospital or day-treatment centre.(2) Subregulation (1) only applies in relation to the issue of a standing order by a medical practitioner if (a) the medical practitioner has made an application, under regulation 98 , to the Drugs and Therapeutics Committee for authorisation to issue the standing order; and(b) the medical practitioner has received notification, under regulation 99(2) , that the application has been approved and the issue of the standing order is authorised.