New functionality in the Enrollment Key Report has been introduced for Admins to see how many times an Enrollment Key has been used, and which Users have utilized them. This information can be viewed by selecting an Enrollment Key from within the Enrollment Key Report. Once the desired Enrollment Key is selected, click on Enrollment Key Uses.
After doing so, you will be presented with a report that lists any Users that have used the Enrollment Key you selected in the previous step. It is also possible to select two or more Enrollment Keys, and view the Users that have used the Key. In order to determine which Key was used by each individual, you may want to add the Enrollment Key Used column from the list of options in the Available Columns drop-down menu.