All AP can support up to 16 concurrent SSID to be configured on them. With the WLC I believe you can have 192 WLAN and distribute those via AP groups.
Currently the WLC can't automagically shut down the radios that are unused, or on a timer.
What you can do, however, is from WCS push a config template based on time that will shutdown the WLAN you have configured.
If you don't have WCS, you can use a time based acl on the switch to block UDP 5246/5247 to the WLC during the hours you are 'closed'.
HTH,
Steve
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Please remember to rate useful posts, and mark questions as answered
HTH,
Steve
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Please remember to rate useful posts, and mark questions as answered