You can choose to include all Categories, or just some of them, by clicking on Categories, and then additional checkboxes if you wish. If you select some, then parts belonging to all other (non-selected) categories will not be loaded into your store.
Once again, you can do this brand by brand, or for your entire store. You can also choose to include Uncategorized products, or not.
Don’t forget to discard, or save your changes!
