There ara basicly 3 payment choices

Credit Card Payment 
You can pay using your Visa or Mastercard from online secure system. Once you selected credit card payment you will be directed to bank secure payment system after you specify your credit card details (number, CVV, cardholder, expiration date) to finish the payment.

Once you success to finish your payment, transfer will be booked and a confirmation e-mail will be sent to your email

Bank Payment 
If you select bank payment you need to do bank transfer to your accounts latest 24 hours before your transfer and share your paymnet document via email.

Cash Payment 
This payment method is not valid in all locations but if you see this choice at payment type page you can choose and do your payment to the driver cash on your transfer.