User logging report for On-Premise PRO server

Hi all!  For an on-premise AIMMS PRO server, does anyone know if there's a way to get a report of the last time each user logged in or the last time each user opened a WebUI session? 

I know it's possible to search and parse logs (at least over the available history), but wondering if there's an easier way.  The AIMMS Control Panel can create a session list by user (Session List tab), but it only appears to show solver sessions (and some of our users don't click Solve). 

For context, trying to find a robust way to identify AIMMS PRO user accounts that are no longer used