1. Navigate to the Shopify theme editor from your admin panel.

2. Once the theme editor has loaded, navigate to the checkout editor.

3. Navigate to the thank you page editor.

4. When in here, navigate to the bottom left of the screen to add an app block.

5. Click on Honeycomb Upsell Checkout Extension.

6. Position the upsell on the thank you page by dragging the extension app block up or down on the left hand side of the editor screen.