The Notifications Count Report is designed to break down the Time Estimate Report by the departments that you have in your store.  This allows you to see which specific areas of the store are accounting for the work that needs to be done, which is especially helpful if multiple areas of your store are responsible for completing the date checking on a weekly basis.

Once you click the report above, you will get the view that you see below.  You can click on departments to resort them alphabetically if you wish.