Thanks! I checked the app on my phone and didn't see an option but my TV is old and I don't believe Vizio is supporting/updating it anymore. I'm going to check to see if it has different options directly on the TV when I get home.
I believe I've tried the 2 or 3 options to program the source, each time I have to reenter all the source names again, so it's been painful. But I'll also check this when I get home to see what source option I'm using. Thanks!