In Confido enable COGS at a Product or Product family level
Select Products from the left nav
Click Manage COGS
Click Add COGS Configuration
Select either Product or Product Family
Input the monthly values
Click Save
Now, to understand how to
Navigate to the Net Sales view by clicking Trade (left hand nav) and then Summary
Under Metrics toggle on COGS
Now, you will see the COGS displayed as a row in both the Consumption and Ship To Forecast
This value is being derived from the number of units (actuals or forecasted) * the inputed rate from above
To learn more about the Net Sales view here