You can use two SSIDs, ie 'WLAN-24g' and 'WLAN-5g' that are only advertised on the single bands, managed
by creating a WLAN group for each one, and applying it to that locations APs in an Access Point group. Under
the AP group's settings, under Radio B/G/N (2.4 GHz) and Radio A/N/AC (5 GHz) sections, override the WLAN
Group, and choose the 'WLAN-24g' WLAN group under the 2.4 radio section, and your 'WLAN-5g' WLAN group
under the 5 radio section.