OSMC remote mapping action to simultaneous button press

So having just received my Vero 4K, I wish to modify the rewind and previous buttons on the OSMC remote to change volume. Looking at this thread this seems to be a fairly simple process.

However I would also like to toggle mute by holding down both buttons at the same time. Is this possible to do with the config? Something like


or perhaps there is a way via an xml config?

Interesting: we don’t currently support this, but as it’s software, it’s potentially possible.