For accessing any of the cameras “Advanced Configuration” setting I’ve found logging into the camera directly is the best way to go (and the only way for me).
I’ve got a DS-7608N-E2/P8 NVR. Not sure if you have the "Virtual Host" function as this is the other way of accessing the cameras, mine doesn't.
So the work around I’ve been using to try and keep the hole thing as simple as possible is to plug a Ethernet cable into both the NVR LAN port and to one of the eight NVR POE router ports. Then plug your computer or LAN into one of the other NVR POE router ports (see attached picture)
This gives you access to both sides of the NVR (cameras & NVR)
Then use your internet browser to access either your NVR or camera's more detailed features based on the IP address.
The down side of doing it this way is you lose the use of two NVR POE ports and the possibility of more traffic on your LAN.
I’ve set up a separate tab in my browser for the NVR and each individual camera, so it’s nice any easy to login to any device without having to remember lots of IP address.
The way I have mine installed seems to work really well and is nice and easy to access.