a quick search in the access panel, and google , would seem to suggest the only opotion is to switch off wifi access,
No option to deny hardwired access, which is what I need for his PS5 and PC.
my network is a bit awkward for your suggestion
@pupuqiop , but a good idea that I may be able to implement by putting an additional router in the loft.
I have an old TT router kicking about in the workshop I could use, somits always an option if nothing else is viable