Setup HDHomeRun
You will need to Detect Channels using the HDHomeRun device outside of the NextPVR Web App as described at the HDHomeRun website.
The HDHomeRun will be automatically detected by NextPVR Server ...
Click on a tuner device to setup the device ...
Click on ... Scan Channels ...
You can optionally enter a source for EPG Guide information. Information about EPG Guide sources is at ... EPG
Click ... Scan ...
Click ... Save ... when the scan is finished.
NextPVR Server will offer to update the EPG if you entered an EPG Guide source ...
Thanks to "mvallevand" for help with the Wiki.