For all 12 switch positions you can change its function.

Click on the dropdown menu of the position you want to change and select the desired function.

Select No Action for positions you dont want to use.
If you want to limit the switch rotation to the used positions, place the locking ring under the fitting nut with the notch in the last hole.

The switch can be calibrated when position are not correctly or when a new switch is installed.
Switch position will show current position if this is not correct do the calibration.

Always calibrate all position.
Move the switch to the 1 position most left then hit the button set next to Pos 1, do this for each position.