The AI follow up...
"The user is missing that the Crescendo autoformat feature automatically stacks unison voices regardless of manual side-by-side arrangement, which is why autoformatting after adding unison voices causes them to stack again. The proper workaround is indeed to autoformat the score before adding the unison voices with different durations, then insert those unison voices manually afterward.
This is necessary because Crescendo's Auto Format Score feature repositions notes to avoid overlaps and aligns note spacing based on duration and bar width, not preserving manual side-by-side placement of unison voices. Additionally, when working with multiple voices in Crescendo, notes in different voices have their own rests and separate placement, but autoformatting does not maintain manual spacing overrides for unison voices on the same staff.
In summary, the user is not missing a feature or step but correctly applying the necessary workaround: autoformat the score first, then manually add the unison voices with different durations. This avoids Crescendo's autoformat from stacking the voices after manual side-by-side placement, as it does not preserve that manual arrangement inherently"