You'll find descriptons of window elements below.
Show hourglass icon on the taskbar - when selected, a hourglass icon will be displayed on the workstations. When a customer places his cursor over the icon, information about his time limit will be displayed.
Change icon look according to computer's state - when selected, tray icon appearance will change depending on the computer state.
Flash icon when computer is timed out - when this option is selected, the hourglass icon will be flashing when the time is about to finish.
See also