Thank you for contacting us.
Our team is happy to help you get a new User Agent group created in W3 Total Cache.
You can create a new User Agent group by navigating to Performance > User Agent Groups in your website dashboard. Once you have the settings page opened click the Create a Group button to make a new user agent group.
I hope that helps you get your plugins working together correctly and please let us know if there is anything else that we can do to help.