In the header of the screen you will see the number of Active and Paused Users.
If you click on the Active Users a drop down will display the user details including the logged on since date/time and the current status of the user (see user status for more details about the status available).
The additional menu can be accessed by clicking on the three dots.
This will display the Logged out user panel with the details of the last logged out time for all users.
There is also a refresh button to update the screen to real time.