You can get to this report using the navigation bar.

1. Click the Main Menu .
   
2. Click Reports .
   
3. Click Attendance Reports .
   
4. Click Most Extra Work Time
   

This report shows the top 5 employees and the total amount of time they have worked over amount of hours in the typical work day according to the date range shown.  This is shown as a bar graph.

You can use the date range buttons to filter the date range to find the data you are looking for.

For more information on how KnowIT handles and calculates attendance see the article here.