Ok, so you would just need to use the cmdlets Get-NcVolAutosize and Set-NcVolAutosize. Is this the data you are looking for (I'm just looking at one volume below as an example)?
#7 PS2 D:\Development\PowerShell> Get-NcVolAutosize -VserverContext vs-vmware -Name test | fl *
NcController : den-cluster
Name : test
IsEnabled : False
IncrementSize : 10485760
MaximumSize : 251658240
MinimumSize : 209715200
GrowThresholdPercent : 85
ShrinkThresholdPercent : 50
Mode : off