\version "2.22.1"

EspaceEntrePartition = {
  \cadenzaOn
  \stopStaff 
  \repeat unfold 2 { % A augmenter pour un espace plus important  
    s1
    \noBreak
  }
  \bar"|"
  \startStaff
  s32
  \bar ""
  \cadenzaOff 
  \once \override Staff.KeySignature.break-visibility = #all-visible
  \once \override Staff.Clef.break-visibility = #all-visible
}

\score {
  <<
    \new Voice = "VoixUn" {
      \relative c'' {
        \clef treble
        \key g \major
        \time 4/4
        % \override Score.BarNumber.break-visibility = #all-visible
        c4 c c c 
        \bar "||"
    
        \EspaceEntrePartition
        c4 c c c
        \bar"|."
      }
    }
    \new StaffGroup <<
      \new Voice  = "VoixDeux" {
        \relative c'' {
          \clef treble
          \key g \major
          \time 4/4
          c4 c c c 
          \bar "||"
    
          \EspaceEntrePartition
          c4 c c c
          \bar"|."
        }
      }
      \new Voice  = "VoixTrois" {
        \relative c'' {
          \clef treble
          \key g \major
          \time 4/4
          c4 c c c 
          \bar "||"
    
          \EspaceEntrePartition
          c4 c c c
          \bar"|."
        }
      }
    >>
    \new PianoStaff <<
      \new Staff = "MD" {
        \relative c'' {
          \clef treble
          \key g \major
          \time 4/4
          c4 c c c 
          \bar "||"
    
          \EspaceEntrePartition
          c4 c c c
          \bar"|."
        }
      }
      \new Staff = "MG" {
        \relative c' {
          \clef bass
          \key g \major
          \time 4/4
          c4 c c c 
          \bar "||"
          \EspaceEntrePartition
          c4 c c c
          \bar"|."
        }
      }
    >>
  >>
}