I believe I got this code from Kieren but I may have a typo in my use of it.
_-\tweak padding 50 _\markup{ " " }
It produces blank space on the page below the music as desired but I get
a tenuto mark in the music before the space (not necessarily connected
to a note).
I use this to facilitate page turns without having the lines of music
spread too far apart.
I am hoping I said enough. I will produce a MWE if necessary
TIA for any help with this or any similar way to create blank space on a
page.
Paul