Clone offset hotkey

I'm new to Fusion, or at least haven't used it professionally since the days the node pipes were represented as plumbing pipes and elbows.

I've been working on Resolve quite a bit and I'm in dire need of paint. Fusion paint seems to be simple and reasonable except I can't figure out one thing. How do you interactively pick the clone source in paint? Sort of like ALT+click in Photoshop. The tool manual's Paint entry is silent on this subject.

Have you tried ALT+click? Because that works for me.

Thanks Sander, that worked. For some reason the first time I was trying it the 'x' source cursor wasn't showing either. Maybe the software needed a restart.

Once a stroke is drawn, is there a way to adjust the XY offset gesturally or by using the keyboard to increase and decrease the value other than retyping?

Lastly, is there a way to use absolute pixel values for offsets instead of normalized coordinates?