No, you’d need to remove it from one ‘room’ in the software, and set it up as the other ‘room’. Speakers can be grouped with other rooms, but can’t be in two ‘rooms’ at the same time. 

Thanks for your reply Airgetlam. 

Do you/your team, have any plan to update a configuration like this? That would be a big change if its happen. 

Thanks.

I’m not a Sonos employee, so no, I have no plans to gather a team to do this.

While Sonos has never shared a roadmap of what features they are implementing, I would have significant doubts that they would do so, as it would likely impact sales negatively.