Running Deco X55 in router mode. Suppose I select a device and I "block" it. Suppose also that I have set up two networks, a Main and a Guest one. Does "blocking" the device block it from both networks?

Is it possible to block a device from the Main network, but not from the Guest network? (Somewhat related, even if not directly: Can one network run in Block List mode while the other is in Allow List mode?)

The background is that I created the Guest network for guests a bit later, and I want to move some devices (from people who visit infrequently, and I don't want on the Main network) to the Guest network. I want to block their devices from the Main network, but allow them on Guest. Is that even possible, or is it water under the bridge?

I understand that I can change the password of the Main network, but that will be much more work. (And something that you will recommend I do periodically anyway, but that's a different topic!)

Thank you for your thoughts.