In the manual it says that according to ACI average final creep factor is 3.35 which is different for AS3600 where creep for F'c 40 MPa 200 thick slab in temperate environment is 2.23. The difference is quite high and approach to calculate deflections according these 2 standards would be different.
Which approach is taken in the software in order to account for long term deflections according to AS3600?