Compressing a system

I have a vocal score, for four part choir, with four verses of lyrics, with the words for the four verses under the parts in the score, then a chorus with just one line of lyrics. How can I make the systems justify on the pages for the chorus? I need to treat the chorus pages differently from the verse pages. I have four bars on one page when there is room to move those four bars back onto the previous page. Help!

“A picture says a thousand words.” :grin:

Can you show us what you’ve got?