How to split automatically product completion quantity into multiple lot numbers

We use pre-assign lots in our work order, for which we declared multiple lot numbers.

Once we reach the final operation and have to do the product completion, we expect the produced quantity to be automatically split evenly into the multiple lot numbers that have been declared before.

However, it does not and we have to add as many lines as there are lot numbers, and split the quantity manually according to the lot number.

Is there any feature to enable this?

NB: we also have a by-product as an output in the last operation.

Thanks.

Alex