Open Microsoft Excel and select the sheet you want to lock. Make the required changes. When you are ready to share, click File at the top. Select Info from the sidebar. Select Protect Workbook.

The ability to lock cells or elements of Microsoft Excel and Google Sheets, but not the full sheet, allows maximum customization and control of a project.

Want to protect an important Word document or Excel spreadsheet? Here's how to add a password, make documents read-only, and tap into other tricks to safeguard sensitive files.