Review Tab :
Changes Group :
Protect Sheet :
Prevent unwanted changes to the data in a sheet by specifying what information can be changed. For example, you can prevent people from editing locked cells or changing the formatting of the document. You can specify a password that can be entered to unprotect the sheet and allow these changes.
Protect Workbook :
Prevent unwanted changes to the structure of the workbook, such as moving, deleting, or adding sheets. You can specify a password that can be entered to unprotected the workbook and allow these changes.
Share Workbook :
Allow multiple people to work in a workbook at the same time. The workbook should be saved to a network location where multiple people can open it. Workbooks containing tables cannot be shared.
Protect and Share Workbook :
Share the workbook and protect it with a password at the same time. The password will prevent others from turning off change tracking.
Allow Users to Edit Ranges :
Allows specific people to edit ranges of cells in a protected workbook or sheet. Before using this feature, first set security on the sheet by using the Protect Sheet command. To use this feature, your computer must be joined to a Microsoft Windows domain.
Track Changes :
Track all changes made to the document, including insertions, deletions, and formatting changes.
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