How do I program a temperature schedule on my Honeywell TH8320U1008?

Press the 'Schedule' button on the screen and select which days to program (All Days, Weekdays, Weekend, or individual days). For each period (Wake, Leave, Return, Sleep), set your desired temperature and time, then confirm to save. You can also use the 'Armchair Programming' feature by detaching the thermostat from its wall plate to program more comfortably.