In reply to Ray.

Hi Ray,
No app is automatically or forcefully enabled. You (or your IT) have the full control to select which of the iOS apps are critical to your business and you would want to whitelist for Fast lane. The easiest way to select those apps is to create a configuration profile using the MDM platform you run in your organization and push that configuration profile to your managed devices. If you use Meraki Systems Manager as your MDM platform, you can also select to Whitelist Apple audio/video calling.
Your AVC profile will likely reflect your Fastlane profile configuration. On the Wireless LAN controller, the AVC profile can override the marking or allocate bandwidth limitation for targeted apps, independently from the Fastlane profile enabled on the iOS client.