Pad position on fit bike

Fitters
1

Putting all the bar configurations out there aside. What is the best pad position to start a fit on a fit bike?

  1. over the base bar
  2. in front of the base bar

Then for control and handling, working to reconfigure a clients current ride.
For small riders, how far behind the base bar would you go?
For tall riders, how far forward of the base bar would you go?

Thanks.