How to Achieve Top-Down Row Grouping in Excel Using rust_xlswriter?

I'm working with the rust_xlswriter crate to generate Excel files in Rust, and I'm trying to group rows in a top-down manner — meaning I'd like the collapse/expand button to appear at the top of a grouped section, not the bottom.

Is there any way to simulate or force a top-down grouping behavior using rust_xlswriter?