How to move mouse with 2 fingers on trackpad? How can I change the default behaviour for the two-fingers gesture from scrolling to mouse movement?

That is to say:

When I put two fingers on my trackpad, and move them, I want the mouse pointer on-screen to move. I do not want the window to scroll.
There are a couple of apps that I know of that does this kind of thing: 


BetterTouchTool
MagicPrefs


Screenshots from BTT (left) and MP (right) 




Disclaimer:  These are not tools I use personally (no need) so I cannot vouch for them. However, BTT has a trial and MP is free.  So, your risk is minimal if you want to test either of these out.