If you activate Authorize.Net or Stripe as your payment processor/gateway, your OTO(s) will automatically be 1-click upsell. It means that customers do not have to input their credit card details again when they decide to purchase OTO(s) after purchasing the front end product. They will directly do the checkout process if they click the order button on your OTO sales page.

There is no specific setting for this feature.

Did this answer your question?