RE: How to Protect me workbook ?
Hello Esson
Thank you for your question.
To password protect a workbook (against being opened or modified) go to File-Save as.
Click the Tools button in the Save As dialogue box, and select General Options. Then you can set a password to open or a password to modify.
If you wish to apply protection to a worksheet, not a workbook, then this can be done on the sheet itself, by going to Tools - Protection - Protect Sheet.
Kind regards
Amanda