# In-Checkout Cross-Sells
## What are In-Checkout Cross-Sells?
**In-Checkout Cross-Sells** allow your customers to add complementary products to their order with a single click during checkout. This feature increases your average order value (AOV) by offering relevant product recommendations at the final stage of the purchase process.
{% hint style="warning" %}
In order to maximize revenue with In-Checkout Cross-Sells, we recommend pairing it with[Promotion Progress Bar](/checkout/checkout-extensions/promotion-progress-bar.md)in your checkout for even greater impact.
{% endhint %}
***
## How to configure In-Checkout Cross-Sells?
Follow the instructions below to setup an **In-Checkout Cross-Sells:**
1. From the dashboard, go to **Extensions** tab.
2. In the Extensions page, scroll down and find the **In-Checkout Cross-Sells** extension and click **`Add to Checkout`.**
3. Open the **Select your markets** window, and confirm the correct market is selected. \
4. Edit the header text.\
5. Select the number of products to cross-sell in your checkout. As a best practice, we suggest starting with three offers.\
6. Set the hierarchy of your cross-sell offer groups. To hide an offer group, click the **`x`** icon.\
7. To manage your offer groups or to , click **`View all groups`**.\ **Note:** Offer groups are a group or collection of products that will be cross-sold in your checkout based on the hierarchy you set. If you would like to upsell a specific product, you can add one product to a custom offer group. \
8. To create a new offer group, click the **`Add new group`** button.\
9. Add an offer group name, select the cross-sell type (products or collection), and select the products that you would like to include in that offer group. Make sure **`Save changes`** when your done. \
10. Once you are done creating a new group, select the offer groups you would like to display in your checkout.\
11. If you would like to exclude certain products from being displayed, click **`Browse`** and select the products you would like to hide. \
12. Next, manage the discount you would like to apply the Post-Purchase Offers.\ **Note:** Fixed amount discounts are not available when more than one market is selected.\
13. Edit the discount name.\ **Note:** Customers will see this discount name. It will be shown under the line item in the final checkout screen.\
14. Once you are finished, make sure to **`Save`** your settings. \
15. Open your Checkout Editor and [install your extension](https://docs.platter.co/~/changes/QMi520wn6lsXSXuRamqi/get-started/get-started-in-3-steps#installing-an-extension).
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