I cannot find a way to limit the wireless channels in use, usually you are able to tell systems that only 1,6 and 11 for example are to be used in the UK. Do what you like automatically but it has to be one of these channels.

I have clients that are locked to scan only 1, 6 and 11 to maximise efficiency (medical devices), if any auto scan puts an AP on any other channel it's going to create a dead spot.

I would expect this to be in a global site area as it impacts all AP's and SSIDs deployed.

Seems a serious omission to me.