Mark as Final
Mark a workbook as final in Excel to indicate that this is the final version of your workbook. Only use this feature to discourage editing. Users can still edit the workbook.
1. Open a workbook.
2. On the green File tab, click Info, Protect Workbook, Mark as Final.
3. Click OK.
Note: users can still edit the workbook by clicking on Edit Anyway. Also notice the Marked as Final icon in the status bar.