[Lilypond] How to add chorus to multi-verse lead sheet for guitar?

[John Helly]

Aloha.

I just discovered LP and am very excited about it after struggling with Sibelius. 

I have a multi-verse guitar lead sheet working but cannot figure out how to add a chorus.  I’m struggling to find an example with a chorus and wonder if anyone can point me in the right direction, pls?

The structure I have is shown below but it results in the chorus being added as another stanza. 
J.
========================== Example below ============================================

\version "2.18.2"  % necessary for upgrading to future LilyPond versions.
%\predefinedDiagramTable.
\include "predefined-guitar-fretboards.ly"

chorusI = \lyricmode {
  \set stanza = #"Chorus 1."
}

verseI = \lyricmode {
  \set stanza = #"Verse 1."
}

verseII = \lyricmode {
  \set stanza = #"Verse 2."
}

verseIII = \lyricmode {
  \set stanza = #"Verse 3."
}


theChords = \chordmode {
  % insert chords for chordnames and fretboards here
}

staffMelody = \relative c''' {
\tempo "Andante" 4 = 120
\key A \minor
   \clef treble
   % Type notes for melody here
   \bar "|."
}

\score {
<<
    \context ChordNames { \theChords }
    \context FretBoards { \theChords }
    \chords{
    }
    \new Staff {
      \context Voice = "voiceMelody" { \staffMelody }
    }
    \new Lyrics = "lyricsI" {
      \lyricsto "voiceMelody" \verseI
    }
     \new Lyrics = "lyricsII" {
      \lyricsto "voiceMelody" \verseII
    }
    \new Lyrics = "lyricsIII" {
      \lyricsto "voiceMelody" \verseIII
    }
   \new Lyrics = "chorusI" {
      \lyricsto "voiceMelody" \chorusI
    }
>>
  \layout { }
  \midi { }
}

-- 
================================================
University of Hawaii, Maui College / Mobile 760.840.8660