RE: Commercial Office A Grade Building in Sydney or Melbourne

Tenant Base Building outside provisions include a floor connection near the central core of the building which is 300mm x 300mm and 0 kpa.

50m2 office has 3 walls and 1 wall is the external curtain wall facade of the building

What are the options and considerations when looking to supply outside air to a medium sized office 50m2(within a commercial office A Grade building in Sydney or Melbourne) and a population of 8 to be built within an open plan new office building which has a VAV system.