To sign out of the control panel, click on the button. You will be taken to a screen confirming that you have signed out successfully. Click the the link to sign back in.
Important note: Many browsers keep your control panel session in memory even after you sign out. If you are not the only one that uses your computer, then be sure to close all running copies of your browser before leaving your workstation. This will clear the browser's memory and make it impossible to sign into the control panel without the correct password