If you take one of the csv files and make it look like you want, that becomes your form.

I always convert the csv section to a Table, which is on the Home menu. That makes everything else you want to do easier once you get the hang of it.

Once you have it looking like you want, then in the future, you just need to clear the table, copy the fresh csv data, and paste it into the empty table. Any formatting and summary formulas are still there.

I don’t have a link that explains everything, sorry. This is a system I developed years ago for my work usage.

But a helpful link to start working with tables is https://www.contextures.com/xlExcelTable01.html