Limit broadband on guest network

[Alister2018]

I have 4g broadband at gome so i have only 500gb to spend per month.
On my old router i could limit broadband on guest network so children couldn’t spend al my internet on their ipads. It was set to 1000kbps download.
How can i set broadband limit on my NETGEAR Orbi on guest network?

[st_shaw]

Put your old router in place, for the routing functions, and run Orbi in Access Point mode, for WiFi coverage. Disable the WiFi on your old router.