This means there is no separate 'edit mode' or 'presentation mode', outputs are always live, and editing of one presentation can be done while another is being viewed.
ProPresenter operators control presentations on one screen, while dynamically presenting to an audience on one or more additional outputs. ProPresenter is a cross-platform (Mac and Windows) lyric and media presentation package built specifically to make high-quality live productions easy - including worship gatherings, sporting events, conferences, or studio broadcasts.