Cross-sale allows you to offer your customers another product from a different campaign. Which will increase your sales..
Go to the promotions section.

Go to the Cross-sales section, and press create.
Give the promotion a name. We'll call it cross sell.

Choose the cross sell headline. We're choosing "You may also like"

Now choose where to show the cross-sell. We're choosing All campaigns, as this will mean no matter what campaign your buyers are buying from, they'll get the cross-sell.

Now to choose the campaigns to show as cross sell. We're choosing specific campaign.

Click on choose campaign. Then select the campaign or campaigns you want to cross-sell from. Once selected, press add campaigns.

Now choose the order in which the cross-sell campaigns are displayed. We're choosing most popular.

For the sales look back window, you can choose the timescale, from 7 days which show the most recently popular, to 90 days which will use a longer window.

Now choose the maximum items to show. We're choosing 4.

Now choose the cross-sell location. Either in the cart. or on the campaign page.

Now you can choose whether you want it to appear just as a cross-sell or whether you want it to appear with a discount offered.

Once you are happy, press create discount.

Publish your store. Once it has published, we can check it in your store.
Go to the store, and press refresh to get the latest version. Pick a campaign from your store. And add an item to your cart.
In the recommended for you section you can see the cross-sell item we chose.
