For many years I was an "Encore" user, and alas, Encore is no longer supported. (Rumors of a new version persist, but... we'll see....) I used it to create piano sheet music.
Encore allowed the user to specify measures/bars per system, and that could vary throughout the song. Is there any music notation software out there that offers that feature? I found that flexibility with that setting made for "reader-friendly" arrangements.
As far as I know all the current music writing programs *) supports you selecting the number of bars per system. The exact way to do it, more or less automatic varies between the programs but it can always be done.
*) Includes but not limited to Dorico, Sibelius, Finale, MuseScore
I can't think of any modern notation program that DOESN'T let you choose where line breaks come, either by an overall 'x bars per line' setting (sometimes you WANT a fixed 4 bars on each line) or by manually entering line breaks.
Obviously if you want a different number of bars on each line you can't command this with a single setting!
But your question is a non-problem. Different programs may set line breaks in a different way to however Encore did it. But they all let you do it.
