The difference between "locking" and "logging out" is what happens to your applications. Locking the computer means your apps are still ON and running. Logging off will CLOSE all applications before signing out of the session. Switch user also keeps your apps running.
For any additional questions or concerns regarding locking, logging off, proximity settings, computer locking, credential management, or compliance, please contact GateKeeper Enterprise support using the Support Ticket form on https://gkaccess.com/support/ or email firstname.lastname@example.org.