"redacted 2018 tax form 1040, one page"
Do you mean that you need only the first page of the Form 1040? When you open the PDF of your tax return in Acrobat Reader, or whatever PDF reader you use, and click Print, you will have the option to select which pages you want to print. Just print the one page that you need.
TurboTax does not provide any facility for redacting information from a tax return. If you have a PDF editing program you can use that to do the redaction before you print the page. If not, print the page, do the redaction with a marker on the printed page, and give your employer a photocopy of the redacted page.
