1. Right click a worksheet tab.
2. Click Protect Sheet.
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3. Enter a password.
4. Check the actions you allow the users of your worksheet to perform.
5. Click OK.
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Note: if you don't check any action, users can only view the Excel file!
6. Confirm the password and click OK.
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Your worksheet is protected now. To unprotect a worksheet, right click on the worksheet tab and click Unprotect Sheet. The password for the downloadable Excel file is "easy".
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