Since you need lot size value in the field 'Inspect'', you would need to use Sampling procedure.
Not using SP would give you sample size equal to inspection lot size as Amol has already suggested, but for getting similar values in Inspect, Sampling procedure would be needed.
Create a SP with percentage sampling and put 100% into that. Assign this SP to your MICs and thus inspection plan.
Now, either create a new inspection lot or reset any existing inspection lot and you would see the sample size value in the Inspect for the MICs.
ntn
