I want to setup QoS should I just do it on the Edgerouter 12 or do I need to also do it on the nanoHD?
I don’t have a cloud key or would not be running any software on a dedicated PC for the unifi nanoHD.
What is my option would this work just fine?
This is what my network would look.
ISP modem, Edgerouter 12, nanoHD to Edgerouter, then long Ethernet from Edgerouter to unmanageable switch to location B and then a possible second nanoHD connected to this unmanageable switch.
You just need it done in the EdgeRouter as the QoS is meant to keep the packets flowing between your network and the internet. For home, there is generally not a need to traffic shape as there are not enough devices connected to cause traffic congestion.