I'm using Finale 25 on a Mac.

I'm working on a harp part that has both rolled and unrolled (plucked?) chords.

The rolled chords play automatically with either classical or romantic HP selected.

I have 4 measures where I don't want the chords rolled.

How do I indicate that in the notation?

I read that a bracket [ before the chords is an option, but when I create one using the expression tool

it only covers one staff. I have resizing selected, but it doesn't work.

Also, the playback doesn't change.

Is there a way to select just these four measures and change the playback style?