Pay Later is a payment method that lets you take down payments without freezing up the order.
To enable Pay Later option, go to Settings > Payments > Pay Later.
Here's a step-by-step guide to use this feature:
Choose the product you want to sell and click Pay.
Enter the amount you want to pay now and choose the payment method, for example cash and confirm the payment.
The screen will now look like the partial payment screen. For the remaining amount, choose Pay Later and confirm the payment. The cart is now open again.
When you're ready to complete the payment, go to that transaction in the Transaction page.
Choose Pay and select the payment method to complete the remaining payment.