Is there a way to wrap to the next line instead of having your work flow off the page?
I believe you mean: When creating or editing music in NWC, is there a way to wrap the lines?
NWC is not a "What you see is what you get" editor. Even though the staffs run continuously without wrapping WHILE you are creating or editing the music, they DO wrap to page margins when you PRINT.
To see how the wrapping looks, go to file > print preview. The view can be magnified.
Exactly where the wrapping occurs depends on size factors such as staff size, lyric size, page margins, and whether or not your notes have extra space inserted.
The wrapping can also be controlled, to some extent, by you. Select (highlight) a measure bar line on the topmost staff when creating music. Right-click, go to properties, choose "force system break."