Hey!
I have 4 bars with only whole notes at the end of a song. The notes are just filling out half the page. Is it possible to make that system wider so it fills out the page with just these four bars?
I’m not quite sure what you mean, but the last system stops before the right hand margin, go to Setup mode.
In the Setup Menu, Layout Options, Note Spacing category, untick the “Only justify final system in flow when more than … % full” option.
If you don’t like the way Dorico has split the music into systems and pages, you can insert System and Frame Breaks in Engrave mode.