How do I create vertical space between staff lines

[Stan Mulder]

I have created a lead sheet with Intro, Chorus and Ending. It's all one
continuous song, but I want to separate with white space the staves of the
Intro from the Chorus, and I want to separate the Chorus from the Ending. So
I would end up with three distinct sections. I'm doing this so that players
who are improvising can more easily see where these sections begin and end.

So, instead of this:

Intro
Verse
Chorus
Ending

I would end up with this:

Intro

Verse

Chorus

Ending


I've searched, but can't seem to pull this together. How is this done?

Stan