Where the premises of the pharmacy for internal use of the central armed forces pharmacy are on the same site as a pharmaceutical establishment of the central armed forces pharmacy or of a medical supply establishment of the armed forces health service, the same pharmacist covered by the provisions of article L. 4138-2 of the Defence Code may simultaneously manage this pharmacy for internal use and act as the pharmacist in charge, delegate or deputy pharmacist of the establishment in question, provided, where applicable, that he fulfils the conditions laid down in articles R. 5124-17 or R. 5124-18 of this Code.