How to remap the Volume Buttons and Oculus button on the Oculus remote?

I am trying to remap the oculus remote as an alternate input for my game.

I have added

[OculusRemote.Settings] bRemoteKeysMappedToGamepad=False

in DefaultEngine.ini to make the d-pad buttons re-mappable

But for some reason the Volume buttons and the oculus O button are not being remapped.

Is there any way to remapp those buttons?