@Dropjop you cannot, according to this article: Zigbee Compatibility of Deco M9 plus

@pippuccio76 You didn't mention your deco device model, so I'm assuming you have anything except M5/M9 plus/ X20/X50/X55. Selecting signal source manually is not yet available for Deco routers,...

@jmvillafana None of the Deco models have the option to "set channels manually", and I don't think it'll be added in the future

@Mutch There's no timeline. Usually it takes 4-6 months for tp-link to release an update

@pmendiburu Buy two 2-packs of M5

@Alexandre. Thanks for the suggestion. By the way, I know you're more than qualified to recommend a WiFi analyzer app, you're sort of a legend in this community forum