GNOME Documentation Projectgnome-doc-list@gnome.orgSwitch Between Users
You may have multiple users on a computer. You can switch between them quickly and easily. Click on the user name at the top right of your screen, and choose Switch User . This will log the current user out and list all the accounts on the computer, allowing any of them to be logged into.
To switch back and forth between users, simply repeat the above steps.
You can not Shut Down the computer if multiple users are logged in. Attempting to do so will only log you out. Only one user can be logged in when attempting to Shut Down the computer.
GNOME Documentation Project
Explain how user switching works, why it's useful, and potential problems (like what happoens if someone tries to shut down when you are still logged in?)