Alternate outputs and obs
With the Alternate output running to OBS, you wouldn't need another video output on your computer. You can send it to NDI and then capture that NDI feed from OBS. If you want to use Alt out differently, you could run another HDMI from your computer for it.
Yes, you can still run your main output to the front of house while using the Alt output.
For using alternate outputs do we just run a HDMI out of are computer into are encoder? What purposed will obs serve? If we used obs can we still run live output out to are front of house projectors?