Any chord in a song can be played when you click on that chord with the mouse. If Use MIDI to play chords is selected in the MIDI preferences, the Windows MIDI settings will be used to play the chord. If the Multimedia Control window is visible, the notes of the chord will also be shown there. You can customize how Worship LIVE! plays these chords in the MIDI preferences. If Use MIDI to play chords is not selected, the notes of the chord will still be shown, but will not be played.
You can edit how Worship LIVE! handles the various chords in your music by editing the chord dictionary.