The CleanupOldSessionsTimer Thing calls the CleaupOldSessions0 service of the RemoteAccessSubsystem every 30 minutes (default value). If you want to change this default value after running with it for a while, log in to ThingWorx Composer, navigate to the timer, and change this default value so that the timer runs at intervals that work for your environment. Note that the timer must have a valid user name set for the runAsUser property to be enabled and to run. By default, runAsUser is set to System.