Setting on Openfire’s Client management page (eg. “Advanced configuration access”, “Logout & Exit”, etc …) does not reflects on Spark’s configuration, that remains allways the default.
To have best settings coverage you need to update to Spark 2.8.3. You can see which settings require higher version of Spark in Client Control plugin’s changelog (although not every setting is listed). Note that some of the latest options might require not yet released 2.9.0 version of Spark, which is in stall currently because of a number of major issues and no developers to work on them. https://www.igniterealtime.org/projects/openfire/plugins/clientcontrol/changelog.html