User Idle tracking report-Grouping results into specific time periods

(imported topic written by patburt91)

In the canned User IDle Tracking report, the results are listed and graphed as unique entries. Is there a way to automatically group the user idle status entries into something like:

users idle for 15 minutes

users idle for 30 minutes

users idle for 60, 90, 3 hours, 6 hours, 8 hours, etc