I'm having issues with 2.4 overlapping. I heard that lower the power level could help but "custom option" is disable. I can't change channel either.Any ideas why these options are disabled?Thanks in advanced!  

Hi there's a big wifi issue in one of my sites. There are many equipment that can connect only to 2.4, so there's a lot of channel overlapping. There are 14 aps and around 350 devices that connect. My idea was to disable 2.4 and just live 5 band but ...