To look at your product nutrition values, go to the list "Nutrients". All nutritional values are computed. Those with the calculator logo are computed based on others. For example, the salt is computed based on the quantity of sodium (2,.5 * sodium).
To add new nutrients, click on "New Row".
beCPG provides CIQUAL and USDA nutritional databases. The import of nutritional values is available from the list of nutrients of the product.