GenoPro is not a native Mac program. It is designed for Windows.
https://genopro.com/faq/is-there-a-macintosh-version-of-genopro.aspx
If you're not familiar with running a Windows emulator on your Mac, this probably isn't for you.

I did a web search for "editable family tree forms" (without the quotes) and there are some basic tree, person and family forms available.

I've used a spreadsheet in the past, I can add columns and rows as I get more information. I do love spreadsheets for their sorting capabilities.

Laurie Sosna
San Francisco,CA