To configure Pay Certify gateway into your Limelight CRM, you will go to Settings > Providers and select "Add New Provider Profile" from the Actions drop down menu. Select 'Payment' as the type, select Pay Certify from the Provider drop-down list, and fill out the required gateway parameters.
These parameters are briefly described here for your reference:
API Token: This will be provided by Pay Certify.
Currency: Select the currency you would like to use. This gateway currently supports USD, EUR and GBP currencies.
Processor UUID: This will be provided to you by PayCertify.
Test Mode: Set to YES if you want to use this gateway in Test Mode.
Once your gateway profile is configured, you will need to assign it to your campaign (s).