It is important to know that this guide is a follow up to the CCP - General - Setting up a payment gateway (Overall) guide - https://app.intercom.com/a/apps/hypc09lp/articles/articles/5989443/show
(In regards to setting up worldpay in CCP, you will need to speak with a member of the CCP support team as they will need to make amendments on the account prior to adding in the details - CCP Only Supports "Select Junior" WorldPay installations at this time (2018-10-09)
1. Click into the WorldPay gateway
Once in the payment gateway section, click the add/edit option against the gateway
2. Applying the correct credentials
Once you have clicked the add/edit option, a box will appear where you can add in the credentials
Name:
Installation ID
This information will be stored against your account you have with Worldpay
Once complete, press the save details and link this gateway option to complete the gateway