Include upsell and cross-sell items you have configured in your WooCommerce product settings. You can find more information Here.

Choose to recommend items by category, tags, or attributes.

Choose number of products to to display.

Exclude specific items via taxonomy ID's

Add products manually to the recommended products list.

You can edit the Header Text that appears above the recommended items in the PeachPay checkout window. The default value is Recommended for you

Auto scroll through recommended items.

Choose how many items appear in the related products section.

Edit the heading for the related products section. The default is Related Products.

Enables a pop-up that recommends a product based on the settings.

Choose between 3 options on when the Pop Up is triggered.

Enable upsell item on all items. If left unchecked you can select what items you would like to upsell on.

Select what product will be upsold or displayed in the popup window.
See the example below of what this looks like using the selected Blue Hoodie.

Alter the appearance and text of the headers, product description, accept button text, and decline button text.

The settings also has a preview to see what the pop-up will look like that updates in real time.