RDP cals per device license do give access to new client device while client device which already has access is logged out.

Hi,

we have 9 no's RDP cals per device license, we have installed the terminal server and activated it and have installed the license.

9 no's of RDP cal license installed means 9 devices can take RDP over server concurrently right, My problem is if i log off a user that is taking a RDP from a device and start a  RDP with a new device, while the device out of nine only eight are currently logged on to server. why is the new device not  getting the access to server.

If the new device does not get the access, then how should i point device from server to give access to specific device's.
please explain how will server give access to clients  in per device and per user RDP cal.