If you have done something complex computation task of excel, you might be need to protect your sheet. Sheet protection will prevent changes on formula, deletion or even cell moving. In Excel, we can arrange any action that allowed or disallowed. How to protect a sheet?
1. Right clik on the label sheet at the bottom of the worksheet (eg. ‘Sheet1)
2. Select Protect Sheet
3. Tick protect sheet and contents of locked sheet
4. Select any allowed actions by tick it in the box
5. Set your password
6. Press OK