Warning for Idle Time Limit

Several of our users use Anaplan with several dashboards open while in other applications. It would be great if there was a pop-up warning that could alert the user to a "2 min warning" that they are about to reach the idle time limit. This would at least give them the awareness that they need to click back in Anaplan so they do not lose the dashboards they currently have open. (Preferably this could pop up outside the browser in a corner but understand if it has to be within the browser)