Go to the NVR, Storage, Schedule and change that channel or 2 of them for testing. Change from Full time recording so only Alarm and Motion is setup unless it is an AI NVR then Alarm, Motion and IVS (Intelligent) for today and tomorrow.
Then in the left side where the Schedule area is under that should be Record Mode. In there click on Sub Channel Manual record type for your channels you want. While this is not 100% HD quality on all systems seeing most sub channels are recording VGA format. However if the camera has a second sub channel that maybe was setup with 1080P or something other you can do manual for that one rather then the first Sub because you can only record one of them at a time. Now this will setup by setting your sub channel to manual to record full time. I setup my Mic Enabled cameras on Sub channel so I can have Audio and all events will still be recorded and able to search for them under the format. Like Motion, IVS, or Alarm for full HD format recording. However in the event say the person happens to go out of the ROI (Recording rule or Grid) and there is thing being said I can then watch and hear what I would have missed just because they were out of the view but still in Audio of.. Here is a view of todays recording from one of my full time cameras. All the lines in the Blue are events that I could search out and play full HD
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