\version "2.25.0"

\layout {
  \context {
    \Score
    \remove Bar_number_engraver
    \remove Staff_collecting_engraver
    \remove Mark_tracking_translator
    \remove Mark_engraver
    \remove Text_mark_engraver
  }
  \context {
    \ChoirStaff
    \consists Bar_number_engraver
    \consists Staff_collecting_engraver
    \consists Mark_tracking_translator
    \consists Mark_engraver
    \consists Text_mark_engraver
  }
  \context {
    \Staff
    \RemoveEmptyStaves
  }
}
marks = \new Devnull {
  s1
  s
  \break
  \mark\default
  s
  \textMark "here"
  s
  \break
  \mark\default
  s
  \textMark "there"
  s
}
A = \new Staff { 1 1 s1 s1 1 1 }
B = \new Staff { 1 1 1 1 1 1 }
<<
  \new ChoirStaff << \marks \A >>
  \new ChoirStaff << \marks \B >>
>>