Netgear Orbi Tips and Tricks
There are posts on the Orbi forum where Orbi users are seeking ways to target an attached device specifically to either the Orbi router or satellite.
My Orbi router is in my study, surrounded by walls, so WiFi connectivity to the router can be dodgy, whereas my satellite is in an open plan area to which everything connects at 100%.
In an alcove, I have a desk-lamp with a Lifx globe. This globe is physically closer to my router than the satellite, but there are walls and windows in the path. The path to the satellite, although further, is through an open area with a direct line of sight. I can get the Lifx globe to connect to the satellite at 100% briefly by power cycling it, but it soon roams to the closer router with a signal strength at about 60%.
I have found a workaround for this. Each Lifx globe has its own built in WiFi. Documentation says not to install a Lifx globe in a light fitting with a metal shade as it blocks or weakens the WiFi signal, so I used that to my advantage.
I found a thin plastic chopping board about A3 in size, and covered it with aluminium foil which I placed beside the lamp between it and the path of the router, so it acts as a fence to block or weaken the WiFi signal from the router so it sticks to the satellite at 100% signal strength. It's been that way for some time now without roaming.
I think the technical term for this is "Faraday cage"