Need Help Programming the Throttle Switch

Hello There! I am needing assistance on figuring out how to use the throttle switch (slider with ‘+’ and ‘-’) to adjust the sensitivity of the motors on the Logitech Extreme 3D Pro flightstick.
Thanks!

So you want to use the throttle to change the % of your driving speed? There was just a thread about this:

Thank you very much, looks like it will be a big help!