Rebind Talking Keys?

[Alpac]

Currently, Numpad 0 and H are really inconvenient keys to press, and I wanted to rebind them to buttons I have on my mouse. However, in the controls area, the push to talk does nothing for me. Where would I rebind?

[PLODDITHANLEY]

Either launch mumble from the PR launcher and change there, or better still when playing PR alt tab find mumble in the system tray (mostly a hidden icon) change and test.

For some strange reason when changing in the launcher they don't stay.

[DzCrow]

i changed in launcher and it stay