Nspanel pro : Google assistant

Hi all,
I’ve followed blakadder description on how to sideload HA companion on the NSPanel Pro and it is working great.
It is mounted in my bathroom. I would like to use it as a “OK Google,…” speaker, as it has a microphone.
Anyone knows how I can activate that, so that I can ask in the morning, before brushing my teeth, what the weather is going to be like, or to play a song?
Thomas.

No one?
Thx.