Select your number of riders from the drop-down menu on the left.
After you click on "Pay Now" button, on the left, it will open a new window
like the one in the screenshot below. In the new window, if you have a
PayPal account and want to pay with PayPal, fill in your email address and
PayPal password and click the login button. If you instead want to pay with a
Debit Card or a Credit Card click on the button for that.