Yes, first of all, thanks Therealbeef, for the reply. In essence, I produce fairly short video presentations for a local group here. I usually produce the video with a video editor, but there are times when it would be better to do it live.
Normally (with the pre-recorded stuff I do), my machine has an hdmi output that goes to a projection system here. On my system (Linux Mint), I have the video set up as a separate monitor that is, spatially speaking, to the right of my regular desktop. I run something like VLC with the output window in full screen on the second monitor (which is the projection system).
I would like to either use something like that setup, or even a Google ChromeCast device to the same system. I'm wondering if there's a way in OBS to send the output to another monitor. That would be ideal. Thanks!