First off, you need to search for the Gift Card. Review this article on Searching for a Gift Card, if you do not know how to search for existing Gift Cards.

Once you have reached the Gift Card Options page, you can add the amount you would like to Reload onto the Card.

Press Reload button.

The shopping cart will appear and then you will be asked to Invoice the Cart to a customer. Once this is done, continue to Checkout.

Take payment.

You are done!