Print return label on the order

You must go to Navigate to Orders > Automation rules

• If you want it to print for all orders choose a universal trigger, such as "if sum of line items quantity is greater than or equal to 1" or "shop name contains".
• If you want it to only print for orders containing certain products you can use the option "If SKU is In List Contains". You can create a list of all of the SKUs you want to use to trigger the rule.

For the Actions, you can set the action to "Automatically print return label". Below is a screenshot from my test account as an example: