Complex Piano Notation Assistance in Flat

I'm downloading MusicXML files from public domain works, importing them into Flat.io, and then creating my own shortened versions. However, the notation in some of the files may be awkward, so I'd like to reformat it to look like the original printed versions I have.

I can do most of the work myself. It's just certain sections that are more complex than I know how to do. I'd like someone familiar with Flat.io to either teach me how to do it via Zoom / Teams or just make those changes for me.

Thanks.

Heidi