Spreadsheet has personal data such as names, addresses. Also has Social
Security Numbers, which should be private.

Trying to send the file to someone so they can edit part of the file. Don't
want them even to see the SSNs.

I know how to protect a cell from editing and how to hide columns, but
can't figure how to allow editing but prevent even seeing the contents of
certain cells.

Am sure it's simple, but I'm stumped.