That's not in mine. I am running 388.2Wireless - Professional > Enable wireless scheduler
The radios don't get switched off, afaik. Only the SSIDs being broadcast.
And if you want more information of where those options are, you need to specify your router and firmware version, specifically.
I am running 388.2
Asuswrt-Merlin 388.2 is beta and RMerlin mentioned 5GHz settings bugs to be fixed in tri-band routers. This is a test firmware only and not a stable release. Is the setting available in stock Asuswrt for your router? If it is - you have to wait for 388.2 stable release.
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