Most people on this forum would find how to install a plugin a trivial and easy thing to do, but for some, new to IP Camera systems it is not quite so straight forward.
I initially had problems trying to download and install camera plugin on my POE NVR. But this worked for me, so I thought I'd post a guide for anyone else having problems.
1. Connect laptop via LAN cable to spare POE port on NVR.
2. Turn wifi off on laptop and select LAN
3. Using IE 11 ( NOT EDGE) access NVR web browser as normal, Go to camera Registration page and click on the "e"

A new tab should open for that camera, Login with same password as NVR and you will see below screenshot.

4. Click on where it asks for plugin, then click SAVE and RUN.

5. Your Anti Virus might not like it, because its new and not very common. So allow plugin where necessary.

6. Plugin should now download and install. Live view should now work.
7. Log out of camera and NVR, close browser. Disconnect LAN cable.
8. Enable wifi, log into NVR and camera, live video should work OK.
This worked OK for me, so I hope it helps anyone else having problems with poe NVR and camera plugins.
I initially had problems trying to download and install camera plugin on my POE NVR. But this worked for me, so I thought I'd post a guide for anyone else having problems.
1. Connect laptop via LAN cable to spare POE port on NVR.
2. Turn wifi off on laptop and select LAN
3. Using IE 11 ( NOT EDGE) access NVR web browser as normal, Go to camera Registration page and click on the "e"

A new tab should open for that camera, Login with same password as NVR and you will see below screenshot.

4. Click on where it asks for plugin, then click SAVE and RUN.

5. Your Anti Virus might not like it, because its new and not very common. So allow plugin where necessary.

6. Plugin should now download and install. Live view should now work.
7. Log out of camera and NVR, close browser. Disconnect LAN cable.
8. Enable wifi, log into NVR and camera, live video should work OK.
This worked OK for me, so I hope it helps anyone else having problems with poe NVR and camera plugins.