You go to read PID data which is the oscilloscope symbol on the left. At the top you select dashboard, then you have to manually add it by clicking set up all gauges down the bottom, it's the settings looking button, then you have to connect to there live data by clicking the play button... Or maybe the other way around, I can't remember.
I'm not connected to a vehicle now but that is the gist of it.
Yes it has to be running, the cam has dicks that go past the cam sensor. The pcm doesn't know the engine position until it's cranking, and won't know the cam error until it's running.