"Production Order"- to produce multiple product

In Manager’s “Production Order” tab;
we can choose multiple “Bill of materials” to produce one item.
If the production process produce two items as a result, means;
*one main item and one byproduct(which is also an inventory to sale)
*two main items both are going to be inventor items to be sold

How can we achieve these kind of situation?
any help/idea please!

This suggestion is the oldest one on the ideas list: Production Orders - Enhancements. I am closing the topic.