To run a transaction using NMI first click on Card Sale.
Enter the Credit Card Number, Expiration Date, and the Amount you want to charge.
All other Information is not required, but it is recommended to fill out as much information as possible to be able to find the transaction in the future, or for chargeback protection.
Then Scroll Down to the bottom of the page.
Click Charge to run the transaction.
Once clicked you will be brought to a new page that will inform you whether the transaction was successful or not with the transaction ID.