Asked to sign a PDF but not sure how? Adobe Reader, Acrobat, Preview (on Mac) and other PDF reader apps lets you sign PDFs and embed digital signatures into a PDF. If you’ve received a PDF as an attachment in email or viewing a PDF on the web, Teams, or OneDrive, make sure to download the PDF before trying to sign it.
Some PDF documents have security settings that prevent you from adding electronic signatures. In this case, print such documents, sign it by hand, and the scan it or take of picture of the document and create a new PDF document.
For step-by-step instructions illustrating how to digitally sign PDFs visit https://lc.landfood.ubc.ca/sign-pdf-documents-digitally/