Zoom Up From Walking dosen't work.
Numpad -: Zoom Up From Walking - in order for this to work, you MUST FIRST
use the grapple hook to move at least once. This will capture
your postion. Once you've done this, you can then press the
option key while walking and as long as you hold it, it will
vault you up into the sky. This can be useful to start flying
using the wingsuit.
I'am doing this but it don't work.
I can concur that the options don't work.
Numpad -: Zoom Up From Walking
Numpad +: Fly Up From Wingsuit
Up Arrow: Fly North Wingsuit
Down Arrow: Fly South Wingsuit
Left Arrow: Fly West Wingsuit
Right Arrow: Fly East Wingsuit
At least on the Epic version.