# Summary Use this screen to view and manage cross-selling rules. Cross-selling rules allow you to automatically link Related Items and Upsells to products via Category/Brand/Collection/Attribute associations. #### Key to icons  = edit  = delete ## Setup ### Rule Setup [Rules](https://bookstack.iconography.co.uk/books/cross-selling-rules/page/cross-selling-rules "Cross-Selling Rules") must be setup for this functionality to work. ### Related Products Search for products to include them in this rule. These are similar to a 'you may also like', and are displayed below the product description on the [Product Detail Page](https://bookstack.iconography.co.uk/books/product-detail-page "Product Detail Page"). [](https://bookstack.iconography.co.uk/uploads/images/gallery/2024-09/hHqimage.png) ### Upsell Products Search for products to include them in this rule. These are typically simple products, which should be single click upsells, e.g. scatter cushions or a basketball upsold to a pair of trainers. These will display near the add to basket button of the Product Detail Page.  > Made to Order and Bundle products can not be upsells; due to the complexity of these products, they can not be single click adds to basket. > > Products with multiple variants are not recommended for Upsells - use Basket Upsells instead. ### Basket Upsells Search for Variants to include them in this rule. You may also need to setup an Optional Filter.
Field | Purpose |
Optional Filter | *This limits the rule to apply to certain Variants of Products that meet the rule's criteria, e.g. to only apply this upsell to the 'large' variant of a product, simply enter 'large'* |