After you have switched WMM on in the controller.
Am I right in the following:-
1) Clients will automatically use it if they can? Do you have to switch it on in clients if so how?
2) Between the clients and the AP - regardless of any other configuration on your LAN, will WMM prioritise what happens up to the AP? In which case perhaps it is useful on its own?
3) Will it overwrite application markings on the client or will they remain in tact when it gets to the LAN switch?
Cheers!