Payment Gateways are services that allow you to collect money from users based off subscriptions. In order to use a gateway, you must have an account with the specific company. For example, if you wish to use PayPal, you must have an account on the <a href="https://www.paypal.com" target="_blank">PayPal website</a>.<br />
To setup a gateway, click the drop-down to the right of the gateway, and select <i>Set Up Payment Gateway...</i>