I use blue iris and not an NVR but that should not matter. From a PC on the same network open the reolink client and select the 423. Make sure it's selected (you will see a blue outline around it). I sometimes have to click it a few times to highlight it. Once it IS selected the "PTZ" tab should appear below it. Click the drop down, move the cam to a desired location and click "set preset". You can double click the word preset 1-64 and give it a name. Then you can build a control path. I had to redo mine due to the cam wants to patrol CCW from the top down instead of taking the shortest path.