Costing Lot Sizes/Variant Configuration

We are trying to identify where to establisth multiple costing lot sizes "in general" --- and in relation to use of "Variant Configuration" in regards to Costing Variants for use of the Varient Configurator.

There will be multiple Costing Lot Sizes used for 1 material. So the Material Master would not be effective. There should be something related to Costing Variants that can be assocated with Various Lot Sizes, I think?