This document explains how to disconnect and sign out from the GlobalProtect app from a Chromebook.
To disconnect from the GlobalProtect VPN, simply open the GlobalProtect app and click on the green shield icon above CONNECTED:
When GlobalProtect is disconnected, the entire app screen with appear gray with the words TAP TO CONNECT in the center of the screen:
Because of variations in devices and versions of the Chromebook operating system, it is possible these screenshots will not reflect what you see on your own device. The steps to follow will still be similar.