I map keypad 0 and keypad . to the following:

Keypad 0 = toon1 forward, toon2 strafe left, toon3 strafe right
Keypad . = toon1 backward, toon2 strafe right, toon3 strafe left

I also map the Ins, Home, Del and End keys to camera settings to quickly reset and adjust camera position on all 3 characters.