I found a sample snippet using GrandStaff for the purpose of placing two fermatas on top/bottom of a bar line.
But my score with PianoStaff, I can't manage to get the fermatas to align similarly.
Attach is pdf of the engraving, and below is the lilypond.
Thank You, Javier
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\version "2.14.2"
%-----------BEGIN SAMPLE SNIPPET
\score {
\new GrandStaff <<
\context Staff = one {
c''1 \bar "|."
\override Score.RehearsalMark #'break-visibility = #begin-of-line-invisible
\mark \markup { \musicglyph #"scripts.ufermata" }
}
\context Staff = two \with { \consists "Mark_engraver" } {
c''1
\override Staff.RehearsalMark #'direction = #DOWN
\mark \markup { \musicglyph #"scripts.dfermata" }
}>>
}
%--------------BEGIN FAULTY SCORE
\score{
\new PianoStaff <<
\set PianoStaff.connectArpeggios = ##t
\new Staff {
d''1\arpeggio |\bar "|."
\override Score.RehearsalMark #'break-visibility = #begin-of-line-invisible
\mark \markup { \musicglyph #"scripts.ufermata" }
}
\new Staff \with { \consists "Mark_engraver" } {
\clef bass
<f a>1\arpeggio|
\override Score.RehearsalMark #'direction = #DOWN
\mark \markup { \musicglyph #"scripts.dfermata" }
}>>
\layout{\context { \Staff \consists "Span_arpeggio_engraver"}}
}