Perhaps you’re getting the settings confused. You may want timeoutLockMinutes or timeoutLogoutMinutes.
Specifies the amount of idle time in seconds before the console requires the user to authenticate again to take certain actions. The timer is reset every time the user authenticates or does an action that would have required authentication within the idle time threshold. The default value is zero on upgrade from a deployment earlier than V8.2, the default value is infinity on a clean install of V8.2 or later.
Specifies how many idle time minutes must elapse before the console requires (the user) to authenticate again. This setting is different from loginTimeoutSeconds because timeoutLockMinutes hides the entire console to prevent any other (workstation) user to see or use it. The idle time refers to the lack of any type of input to the session including key buttons, mouse clicks, and mouse movements.
Note: This option does not take any effect on the console if an operator accesses it using the Windows session credentials (Windows authentication).
This option was introduced with BigFix V9.1.
Specifies how many idle time minutes must elapse before the console is closed. This setting is different from loginTimeoutSeconds and timeoutLockMinutes, because timeoutLogoutMinutes closes the console completely. The idle time refers to the lack of any type of input to the session including key buttons, mouse clicks, and mouse movements.
This option was introduced with BigFix V9.5.11.