To zoom in on a particular day in the roster in more detail
  1. Select a shift (or all shifts) on the desired day
  2. From the View tab click on Timeline with Zoom

  3. The roster day selected will now be shown on a 24 hour time scale. 

  4. You can now manipulate the shifts on a more detailed view.  

  5. To resume back to day mode in the roster, click on the Timeline with Zoom button again.