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A standalone mode AP does not have all the features/functions that are available when managed by a ZoneDirector WLAN controller.
A standalone mode AP has no options you desire on 802.1x WLANs, but does have HotSpot options Maximum Session Time, and Grace Period,
which are used to limit access (duration) and force re-authentication, like you describe.
ZoneDirector managed AP WLANs that employ 802.1x, can be configured with a Grace Period and Idle-Timeout, and a Service-Schedule of which
hours of which days, they may access your WLAN for much greater control, but for 802.1x, is only available if also employing the ZoneDirector.