If no actions are performed within 15 minutes, your session will be locked and you will be forced to re-input your password. You can also log out by clicking the Log out button.
You can manually lock your session by clicking the Lock button within the nowEDC system bar as shown below:
To unlock the session you'll need to enter your password which will allow you to continue using nowEDC system. You can also completely log out of the system by clicking the Log out button.