How to remove front control panel from NEFF U1410/1420?

Hi,
I need to get into the front panel of my friends oven in order to clean a faulty/dirty setting switch.
I know that there are screws in the top and bottom of the panel but I need to know how to remove the knobs.
Do they just pull off? I need to know so I don't make it even worse!! :-)
Any help gratefully received. ASAP