Manually assign "Transform From Item" to the work order operation

Hello

When "Transform from Item" is mentioned/Entered while creating Transform work definition. Do i still need to assign this "Transform From item" to the work order operation manually ?

If yes, then why we have this option of "Transform from item" while creating work definition ?

If No, then is there some step i am missing since i cannot see the "Transform From item" in the operations tab like we see in Rework Work Order.