We had a partner that asked about looking into Radius Access Rejects, and being able to report what username was failing. This quick-and-easy bundle shows you the number of access accepts and rejects (same as the default AAA screen), but the still in for this case is the actual username, as opposed to the client IP.
The page with the stats looks like this:
...and the drill down shows the username:
This bundle contains the trigger and the pages needed.