Enabling this payment gateway automatically enables PayPal Express.

In order to complete this payment gateway setup, you will need to obtain an API Signature from PayPal. Log into your PayPal account and go to the Profile page. Click the API Access link, then click Request API Credentials link. Choose the API Signature method then agree to the terms and click Submit. 

To set up the PayPal Website Payments Pro payment gateway:

1. In the AspDotNetStorefront admin console, go to Configuration > Settings
   
2. In the Filter section, enter "PayPal" in the Search All Fields box, then click Apply Filter
   
3. The following Settings will need to be populated with your personal account information, obtained here from PayPal. Do not change the other Settings unless instructed to do so!
   - PayPal.API.Password
   - PayPal.API.Signature*
   - PayPal.API.Username
   - PayPal.BusinessID
   
   
4. Finally, go to Configuration > Site Setup Wizard in the AspDotNetStorefront admin console and select PayPal Payments Pro from the Payment Gateways section. Click the Save button, and your gateway setup is complete.

PayPal Standard, Express and Advanced options now include the PayPal Credit feature.