Hi,
If you would like to change the way the systems are distributed among pages (and I've been doing that myself on a big band arrangement today
), you can use the Page Layout/Insert Page Break button (or System break) to break up the system distribution more the way that you would like them.
Since a picture is worth a lot of words, I'll point you to the Users Guide (Help/Users Guide) and you can use the Index to look up "layout" or "page layout" for step-by-step instructions to massaging the score the way you want it to look. Musician and Composer offer a lot of tools to help you get it perfect for you (which is good, because some of my instrumentalists want it all on one page, while others want everything spelled out really big, and therefore on multiple pages
).
ttfn,
Sherry