Session
Programme return (sent to commentators)
Programme audio level (must NOT move when a commentator speaks, see mix-minus check)
Producer talkback (private, never reaches vMix)
3.0×
level of what is sent (aim for about 3/4 bar when you talk)
Talk-to-all hotkey (works only while this window is in front):
Pick any key that does not clash with your graphics pages, e.g. F9.
idle
Director intercom into vMix (commentator "Talk to Director")
A vMix Browser input that carries a commentator's voice only while they hold Talk to Director. It is separate from the commentary microphone inputs, so it can never reach the final mix by itself:
in vMix set this input's Master (M) OFF and use its headphone / solo button to hear it.
vMix TTD page not open