intentional slow shutter & flash in SD600

I'm a pro photographer and am used to being able to set a slow shutter speed with flash to mix light sources and freeze moving subjects. I bought the SD600 a while back to have something to keep in my car and use for personal snapshots, but now I'm trying to get creative, and I can't figure out how to set an intentional slow shutter speed with the flash going off, other than the slow synchro mode. Is that it, or is there some secret access to set my shutter speed and even f-stop?

Also, when I adjust the over/under exposure, I assume that is the overall exposure, yes? Is there a separate override control for the flash?

Thanks, Andy

The SD600 has no direct control over shutter speed and aperture. What's called manual actually has very little manual control. If you want to get very creative, you have the wrong camera.

Gary