I'll have a try and i'm assuming it's largely the same as in the GT and this is from memory and after much mucking about with it over the years:
Left Dial
Dial Turn:
Set temperature for passenger zone
Buttons:
Air Con Button (*)
Light on - Air Con on
Light off - Air Con off
Auto Button -
Both lights on = fully automatic. The temperature (including activitation of air con) and fan speed are controlled automatically to achieve chosen temperature in both zones, air is also directed to the best place to reach temperature in the quickest time (to warm the car it aims air at your feet, to cool the car it mostly aims it at your face)
Left light on = semi-automatic = temperature is controlled automatically but fan speed and air direction are controlled manually
Both lights off - not possible.
Mono Button -
Light on - the temperature in both the passenger zone and the driver zone are the same (driver zone is the master)
Light off - the passenger and driver temperatures are different
Middle Dial
Dial Turn:
Increase/decrease fan speed
Buttons:
Top button - blows air mostly at the windscreen
Middle Button - blows air mostly in your face
Bottom Button - blows air on your feet
Allowed Combinations
Feet only (bottom button light on)
Feet and face (bottom button light on, middle button light on)
Face only (middle button light on)
Face and Windscreen (middle button light on, top button light on)
Windscreen only (top button light on)
Right Dial
Dial Turn:
Set temperature for both zones in mono mode, driver zone in non-mono mode
Buttons
Top Button:
Rapid heat mode - temperature set to highest setting, rear 'screen and mirror elements on, air directed mostly to windscreen, air con on (depending on external temperature), air circulation set to vents closed. NOTE: In this mode, fan speed will remain at lowest setting until heating element reaches at least 21 degrees and then will slowly increase as the element warms up. In this mode you can turn the middle dial to increase the fan speed as required without affecting any other setting.
Middle Button: Air Circulation
Both lights off - Air circulation in manual mode, exterior vents currently open
Left Light on - Air circulation in manual mode, vents currently closed
Right Light on - Air circulation in automatic mode, vents currently open
Both lights on - Air circulation in automatic mode, vents currently closed
Bottom button: Rear Screen and R/v Mirror heaters
Light on - rear screen and mirror heaters on
Light off - rear screen and mirror heaters off
Conditions:
Auto Mode (both lights on the left dial on) will be cancelled if any of the following happens:
The fan speed (centre dial) is adjusted
The Auto button is pressed
The air direction (center dial buttons) are pressed
The Rapid Heat Mode button is pressed (although it will return to auto mode when the rapid heat button is pressed again to cancel)
The Air Con button is pressed
The Air circulation button is pressed
The air circulation can be set to automatic even when not in fully automatic mode but cannot be set to manual without disengaging the fully automatic mode. Fully automatic mode will sometimes turn both of the air circulation lights off - i have no idea why
The mono button light goes out as soon as the passenger changes the temperature in their zone
Rapid Heat Mode will be disengaged after approx 10 minutes and return to all previous settings
I think that's it. In most cases, fully automatic is great, but sometimes the car can steam up on very cold days because it directs all the heat to the footwell so with some playing about you can hopefully get a perfect setting for each circumstance.
Hope it helps!