Hi
Been a while since i last used the worksheet but the steps are basically:
Suggest Item standard cost - Purchased materials
Suggest Machine & Work Centers
Update costs on these if required
Suggest item standard cost - Manufactured items
Roll up standard cost
Implement cost changes
That will then give the correct calculated cost, when i was first working with this i created a new FG item and setup in a test system, then manually added just those to the worksheet so that i could play with the numbers and figure it all out, i would suggest that you do the same as it helps with getting it all to make sense
Cheers
Nev