gh2 focus question

hey,

I sometimes like to fine tune the auto-focus with a bit of manual focus. I've been using AFS to get most of the way there with AF, then flipping the switch to MF to fine tune.

What I'd like is to stay in AFS but have movement of the lenses MF ring engage the lenses manual focus.

Is there an option to setup the camera like this?

thanks,
Steve