Currently, you can use predefined resources that can contain all the 4 treatment rooms. You can see these resources in action at:http://www.telerik.com/demos/aspnet/prometheus-futures/Scheduler/Examples/Default/DefaultCS.aspx
If you enter an appointment, you will see the Room and User dropdowns (in the advanced edit form) that are the predefined resources. These columns are not available in any of the RadScheduler's view at the moment. However, they will be shown in the views with the official release of the control due in a week.
Having other questions, please feel free top ask us.
the Telerik team