This requires several steps.
Create and run a new job in the integration system with type 'Upload Additional Costs'
In the admin area on the website, go to 'Additional Cost Groups' on the 'Codes' menu
Create your groups - each group will be a drop-down option on the product, with the group name used as the drop-down label
Go to 'Additional Cost Codes' on the 'Codes' menu, and choose the group for each of your codes
On the 'style' screen, set your 'Product Detail View' to one of the 'Quick Quote' views (or leave it blank if you are using the 'FreeStyle' template)