Zone Clock is the one show on taskbar:

If you double-click a taskbar clock,you will see the configuration panel of the clock.
Prefix:an optional typed prefix to be displayed in front of a clock, for convenient identification.
Adjust for daylight saving time: defines whether this clock automatically adjusts for daylight saving time changes.
Timezone: allows to select a timezone for a selected clock.
Display: This message is read-only,it is the TimeZone's display name.
Skin: allows you to choose from a list of skins to customize TimeZone Expert's appearance.
RefreshSkins:If you add or delete a skin,you can push this button to refresh skins information.
Preview:Click to preview the clock's appearance.
Apply: Apply Changes to taskbar clock.
Time format: - defines the format of time for this clock.
Date format: - optionally defines the format of date for this clock.
In this page,you can define the timetable of this timezone working in office.All these message will
show on the tooltip of the taskbar clock.
hint:show on the tooltip of the taskbar clock.
Not working hint:show on the tooltip of the taskbar clock.
Sunday: toggles whether Sunday is a working day.
Monday:toggles whether Monday is a working day.
and so on...
Add:Click to Add a working hours from "Start time" to "End time".
Delete:Click to delete a working hours selected in the list.
In this page,you can define the timetable of this timezone Sleeping at home.All these message will
show on the tooltip of the taskbar clock.
hint:show on the tooltip of the taskbar clock.
Not working hint:show on the tooltip of the taskbar clock.
Sunday: toggles whether Sunday is a sleeping day.
Monday:toggles whether Monday is a sleeping day.
and so on...
Add:Click to Add a sleeping hours from "Start time" to "End time".
Delete:Click to delete a sleeping hours selected in the list.