Applications Manager's IdleLogoffTime is set in the Options.properties and when set, will auto log off a user if the user is inactive for a specified amount of time.
Currently, this option can be overridden by setting the localOptions option within a user's client.properties file. A user can remove the IdleLogoffTime option within the local Options.properties.
Or if a user is already using their local Options.properties, setting an IdleLogoffTime within the Master's Options.properties will not affect the user.
Applications Manager 9.6 and below
Oversight between the IdleLogoffTime option and the ability to use either the master's Options.properties (global setting) or a local Options.properties (user specific setting).
A fix will be included in a future version of Applications Manager.
In the fixed version, IdleLogoffTime value will be only fetched from server side Options.properties and cannot be overridden by client side Options.properties.