This feature is not applicable to macOS devices.
The ActiveSync view displays the devices that are accessing ActiveSync. This view is populated only if you have a Sentry configured. From this view, you can decide to register selected devices.
See Registration methods for points to consider before using this registration method.
Go to Devices & Users > ActiveSync.
Select a device to be registered.
Click Actions > Register.
See “Single device registration” in the Getting Started with Ivanti EPMM for instructions on completing the registration process.