Thanks. You can go to each AP today, fix the channel, turn on/off radio etc from the Cloud UI. Today, when you create an SSID and apply to a venue, all the APs in that venue advertise that SSID. We are working on pushing SSIDs to a subset of APs (tagged APs) as opposed to all APs in a venue - this is in the near-term roadmap. In the meanwhile, if per-AP SSID advertisement is critical, you could break down the APs into venues of their own. You can then apply the same SSID to only those venues (each with 1 AP e.g.) that you want. And you can control each AP with a fixed channel and width today - it is under AP Detail screen, then scroll down a bit to see the "review" button. See attached screen grab.
Reach out to me
pnanda@...for more tips and to discuss your case in more detail.
thanks
Phal