Checking Net sources, it appears that the JVC GZ-MG330 cannot directly work as a live video capture device with NCH Debut since it is not a UVC or FireWire capture device. To use video from the JVC GZ-MG330 with Debut, one would first need to transfer the recorded video files from the camcorder's storage to the computer, then play or edit those files separately, but not capture live video through Debut from the camcorder.
So that's not a recommendation, but a workaround that should accomplish the mission.