How to configure AP RF 2.4Ghz and 5Ghz on firefly 3288 android 5.1?

Hi firefly,
may i know that how to configure firefly 3288 android 5.1 Wifi RF 2.4Ghz and 5Ghz? i need create a wifi hotspot and configure two different frequency, Thanks

close case#
setting → advanced settings ->wifi frequency band → 1. automatically,
2. 5GHz only
3. 2.4GHz only