Ignore the tick box at the start of the line. Click the line itself to highlight it then click edit. Simple but not obvious and it has caught me out.
Plug and play cameras have the tick boxes greyed out whereas manually added cameras have the tick box available.
EDIT:
To alter a PoE camera that's plug and play:
- In PoE Settings at the bottom of the screen, turn off 'Network Camera Plug and Play' for the channel you want to alter
- The channel will be removed from the channel list
- Go to Device > Video Device and you will see the camera at the bottom of the page in the Online Device List
- Double click it. It will jump into your list above
- Double click the device name and you can now access everything in the Edit Device pop out (that was previously greyed out)
Don't you just love the V5 UI it's just so damn intuitive to use [typed with a hint of sarcasm]