Exchange online: Associate Resources to rooms

Hello:

We have created some rooms and some resources with exchange online. I wonder if exists the possibility to associate resources with rooms. I think it would be a great idea to show only the resources that users can book for that room.

Is it possible? How? If not, do you know any way to get in other way, with custom fields or something like this?

We have a calendar for each room and resource.

Thank you very much.