Make a payment on a pending payment invoice
Occasionally, you can not make the payment on an order or an invoice immediately. You can do this by selecting "pay later". You will be able to return later and make a payment on your bill. Here is a tutorial that explains how to do it.
From the dashboard, you can click on invoices. And in the invoices list, you can click on the option for the invoice you need to make a payment.
Click on make a payment
Select the payment method you need.
Click on pay.
That's it, the payment has been added!
Here's an interactive tutorial for the visual learners