Yes,
You need to change the Settlement rule of the production order. Keep in mind something, if you work with standard cost, the difference between the standard and the actual cost go to price difference account so your requirement is not compleatly accomplished. I think you need to work with ML if this is your requirement.
About Kiran post, CW6 appointment structure only work if you have IS CWM Catch Weight Management active in your system.
You can also see this old post
CO-PRODUCT-Actual cost distribution based on actual confirmation ratio of Parent and Co product
Arturo.