From your admin panel home, navigate to Cart Settings >> Payment Methods as shown below.
You should see a screen that looks like the figure below.
In the drop down menu, select Authorize.Net eCheck.Net as shown below.
Once you selected Authorize.Net eCheck.Net, click on the Enable gateway button as shown below.
Once you've clicked Enable gateway, you should see a window like the one below.
Scroll down to Payment Server Settings. Enter your API Login ID and Transaction Key.
If you want to test, leave the Test Request on True or change it to False if you are ready for Real Processing.
After entering the required information, you can customize the pages in which your customers will see when entering check information as shown below.
When you are finished filling out the required information, click save to save your new payment processing method.
