How to add a credits screen that appears when a user presses the Oculus 'O' (exit) button

I’d like to add a credit screen to my VR expereince that is only displayed once the user presses the Oculus ‘O’/ exit button (Quest). Does anyone know if this is possible as some quick online research seems to suggest that the button might not be callable from Unreal? Perhaps I’m going about this the wrong way, I’m just trying to avoid adding a Menu Widget with an Exit button, and the Oculus ‘O’ exits the experience key as I need, but it just doesn’t allow me to add any credits before my user quits!

Thanks
Amy