Retailers may be grouped into one or more categories to allow for filtering in the Interface definition. This allows for the creation of segments within the retailer list that might appeal to different audiences, such as commercial vendors and retail vendors.
Under the Interfaces > (Your Interface) > Buy Online Settings, the Categories option controls which retailers should be loaded into this interface:
In the above configuration, only Commercial retailers would be loaded into the Interface's search results. More than one category may be specified on the Interface and each retailer can be in more than one category.
Each retailer can be categorized by editing the Retailer. Click Retailers, then the retailer name. Choose existing, or add a new category directly in the retailer edit form:
Save the Retailer to associate the categories with the retailer.