Choose "Timetable -> Class view" to switch current timetable view to class view.
Choose "Timetable -> Teacher view" to switch current timetable view to teacher view.
Choose "Timetable -> Room view" to switch current timetable view to room view.
Choose "Timetable -> Zoom" to adjust timetable view zoom by selecting 50%, 100%
or 200% from zoom sub-menu.