How do I set up the auto changeover (heat/cool) feature on my Honeywell thermostat?

Press the SYSTEM button until the screen displays 'Auto'. The thermostat will automatically select heating or cooling depending on the indoor temperature. Heat and cool settings must be at least 3 degrees apart, and the thermostat automatically maintains this 3-degree separation (called 'deadband'), which cannot be changed. Note: The Auto system setting may not appear depending on how your thermostat was installed. (Page 2)