From AgileApps Support Wiki

In order to protect the security of your data, you should log out of the platform when you are not actively using it.

You are automatically logged out when the Inactive Session Timeout is reached, as defined by your organization's Password Policy.

To log out manually:

  1. Click the down arrow next to your name at the top of the window (DownArrowIcon.png).
    A drop down appears with additional options.
  2. Click Logout.
Learn more: Using the Agent Portal#User Options