# Product Upsells Product upsell functionality allows venues to **promote complementary items** during the ordering process. An **upsell is linked directly to a specific product** within the system. The upsell will **only appear** when the corresponding trigger product is added to the basket. > For example: > > If a customer adds coffee to their basket, the system may prompt them with a suggestion such as: > > *"Would you like to add a dessert?"* > > Relevant dessert items (e.g., brownies, pastries) will be shown as upsell options. Upsells are not applied as modifiers to the product. Instead, they are put through as completely **separate products** when sold. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.bossithq.com/menu/customisations/product-upsells.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.