100% Ng
Holding a NVFR rating only allows you to operate under PVT and AWK operations.
CAO 40.2.2 Para 3.1
3 AUTHORITY GIVEN BY RATING
3.1 Subject to subsections 5 and 6, a night V.F.R. rating authorises the holder of the rating:
(a) in the case of an aeroplane grade of night V.F.R. rating — to fly as pilot in command of aeroplanes having a take-off weight not exceeding 5 700 kg on private or aerial work flights within Australia by night under the V.F.R
So if you were to conduct a M/E NVFR charter, it'd have to be under the privelage of your CIR assuming you meet the aeronautical experience requirements.