How can I add users with ZoomRooms license to a group?

Hello!
I want to add a ZoomRooms license user to a group, but it fails.

I can add regular license users to a group, but only ZoomRooms license users cannot.

How can I add users with ZoomRooms license to a group?

(PS: Why would I want to do the above?)
This is because I want to create a new role that can edit user settings only for groups that include ZoomRooms license users for security management within my company.

If there is any other solution, could you please let me know?

thank you.