Is it possible to remap the menu button that’s located bottom left of the screen in big picture mode?

[CorneliusPOTA]

Hey, need some help with remapping the menu button in big picture mode.
I’m using an ROG Ally and when I’m in big picture mode there’s no button on the device that’s mapped to the menu button that’s located bottom left of the screen, the Xbox looking icon.

I’m wondering if I can remap it somewhere in the settings? I’ve had a look at the controller settings and can’t seem to find the place to do it, that’s if it’s even possible to do it in the first place.
When I’m using an external Xbox controller I’ve managed to get it to work by pressing the Xbox button on it. But when I’m using the Ally in handheld mode I’d ideally be looking to map it to one of the buttons on that too. Can this be done?

Thanks

[tintingaroo]

An alternative solution may be mapping something to Guide/Xbox button on Ally side:
https://www.reddit.com/r/ROGAlly/comments/148jvdq/how_to_get_the_xboxsteam_button_configured/joos6bt/?utm_source=share&utm_medium=mweb3x&utm_name=mweb3xcss&utm_term=1&utm_content=share_button