By default it is set to all users for today.

Some reports only work for one day, like Overview and Timelines, so you can only choose one day in Date range.

Each report has a short description under the title.

Reports:

• Dashboard - Overview of data for selected period.
  
• Daily overview - Daily summary of user's activity
  
• Timelines - Usage data displayed on timelines. On the right you can select which timelines to show. Click on the three dots on the right side of each timeline to see the details.
  
• Overtime - Showing difference between Actual user work hours per day and Expected user work hours per day
  
• Start/End - First and last interaction with computer
  
• Attendance - Showing user absent days (no. of days which are work days and there was no activity)
  
• Usage - Computer usage by hour of day
  
• Applications - Top application used
  
• Web sites - Most visited websites
  
• Documents - Most worked on documents
  
• Productivity - Productivity is based on selection of productive applications, web sites or documents.
  
• Tags - Drill down report of entered tags
  
• Timesheet - This is the only view where the data will be shown after you click "Generate" button.