Schedule disabling of Guest Network

Hi,

I use the "guest networks" feature to create separate WiFi networks for my kids devices.

I would like to schedule disabling these at a certain time. I currently have the parental controls setup on the router, but this only prevents them getting to the internet - not our local collection of movies and videos!

I have found in the "Enterprise" section the ability to disable the radio altogether, but I still want mine to be working!

Thanks in advance.