Symantec Mobility: Suite lets you monitor when users enroll devices based on the following criteria:
Number of devices per user
Device operating system
If you enforce the restriction, when a user attempts to enroll a restricted device, a message appears indicating that enrollment is not allowed and why. If you don't enforce restrictions, users can still enroll the devices that violate this policy. But you can monitor violations by running a Registration restriction report. If you enable the Enrollment Restrictions notification on the Settings > Mobility Manager configuration > Notification Emails page, Mobility Manager sends you email notifications to let you know when a user enrolls a restricted device. A low-priority message of the violation is sent to the Administrator inbox in Mobility Manager.