Pallet Floor Space Based Rating

Dear Community,

Hope everyone is doing fine.

I could not find any Rate Basis which would be equivalent to total number of pallets placed on the Equipment's floor. I am using 3d planning and on 6.4.1 and there could be some pallets which are placed on top of each other.

for Eg : i have Order with 15 Stackable  Pallets, 5 Non-Stackable and 5 Stackable 'above-only' pallets.

in this case, the best 3d optimum placement would be

10 stackable pallets on top each other using 5 floor space, 5 stackable pallets + 5 'above-only' pallets using 5 floor space and then 5 non-stackable pallets.

in Total, 15 pallet floor spaces used.

thanks for support and guidance in advance  !!!