When you are finished using the computers, you should make sure you have saved all your work to a USB drive, OneDrive, or your H Drive and then logoff or restart the computer to protect your privacy.
Click on the Start Button (square windows icon on the bottom left of your screen).
Just above the Start Button is the Power Button. Click on it to Restart or Shut Down the computer.
Above the Power Button is the Account Button (a circle with an icon of a person in it). Click the Account Button to Sign Out of the computer.