For a workbook composed of multiple spreadsheets, select Protect Workbook followed by Unprotect Workbook. Enter the Workbook password again when prompted and select OK to remove protections.

Type the password into the "Password to unprotect sheet" field and click "OK." Re-enter the password when prompted and click "OK" to protect the spreadsheet. Press "Ctrl-S" to save the changes.

Microsoft Excel protection offers several types of passwords including Password to open a document, Password to modify a document, Password to unprotect the worksheet, Password to protect workbook ...

Protecting a worksheet in Excel 2003 prevents others users from editing it. For example, if you have tracked and charted your business's sales on a sheet, you will want co-workers to access the ...