A derivative feed included in a recipe or a composite has its cost set to that of its master for the same origin of cost; anyway, it is possible to set an alternative cost for the derivative feed, directly entering it in the cost column or in the list of costs of the ingredient.
The costs of the derivative feeds can also be edited in the costs tab of the platform, after selecting the recipient to display the related derivative feeds:
In the Source group on the left, use the bottom drop down box to select a recipient (at the opening of the form it is set to Master). After this step, only those feeds that have a derivative for the selected recipient are visible. This way, it is possible to enter alternative costs for the derivative feeds, that will replace those of the master in the recipe or composite.