You can make changes to the commodities and subcommodities with which you are associated. To do this, log into the website and click the My Commodities link in the Vendor menu.
You will see the commodity selection form, and a list of all your current commodities below.
You can use the form to find new subcommodities to select. You can also delete commodities from the list of the ones you are currently associated with. See "Managing Commodities: Editing Commodities and Subcommodities" earlier in this guide for instructions.