With Nexus Merchants you can use WorldPay just like any other Merchant account in Infusionsoft (like Authorize.net etc.)

We support the following features:

• Infusionsoft Order Form Charges
• Infusionsoft Shopping Cart Charges
• Manual Charges Within Infusionsoft
• Refunds in Infusionsoft (without the need to refund in WorldPay)
• Void Transactions
• Partial Refunds