I am trying to secure my m5 network as best as possible and it seems smart to change the default admin password. do I need to do that or is that done for me when I set my 'owner' password in the app?...

Or is it possible to dedicate the Ethernet port of one of my m5 units to the guest network? Or any other combination of clever? :)

Subject says it all. I have some smart devices on here ET that I would like isolated from the same network I have my computers on.