This guide will walk you through the process of getting set up to collect payments via the WorldPay Global Gateway gateway.
Notes:
Before adding a WorldPay gateway, you first need to log in to the WorldPay Merchant Interface and make sure the “Capture Delay” is turned off:

NOTE: If the capture delay is left on, WorldPay will auto-capture your transactions and Spreedly will not function correctly. Do not leave it on!
Once the Capture Delay is set, you will need to set an XML Password:

Drill down into the payment gateways configuration:

Add a new gateway:

Select WorldPay Global Gateway from the list:

Now fill in the two fields, using your WorldPay Global Gateway API credentials:

As a final step, select which payment methods to use with WorldPay Global Gateway:

You should now be all set to go. As mentioned above, we highly recommend you run at least one real money transaction before exposing Spreedly to your customers.