Active: Activate the payment gateway/Disable the payment gateway .
Test Mode: Decide on whether you'd like to test the gateway out (This means all transactions made within the store will only be considered a test transaction).
Username: Input your PayPal Express Username.
Password: Input your PayPal Express Password.
Signature: Input your PayPal Express API Signature
Solution Type: Sole: Allows payments to be made without a PayPal account. Mark: requires payments to be made with a paypal account.
Landing Page: Billing: Used to process Non-PayPal accounts. Login: Requires a user to login using their PayPal account
Brand Name: A label that overrides the business name in the PayPal account on the PayPal hosted checkout pages.
Header Image URL: Input the URL for the header image you'd like to use.
Logo Image URL: Input the URL for the logo you'd like to display.
Border Color: The HTML hex code for your principal identifying color. PayPal blends your color to white in a gradient fill that borders the cart review area of the PayPal checkout user interface.