Click on any cell and do right click>>Format Cells>>Protection>>See the Check
box Locked. If the Locked Check box consist the Tick mark then the cell is
locked.
For those cells which you don’t want to lock UNCHECK (Remove the Tick Mark
from) the Locked Checkbox.
You can Select Multiple Cells and Assign this permission. After assigning
the locked and unlocked permissions
For 2003
Click Tools>>Protection>Protect Sheet
Keyboard Shortcut: Alt+P+P
For 2007
Keyboard Shortcut: Alt+P+P
Now you will be asked to provide password twice for protecting the Sheet.
Once you have protected your worksheet then the users can not able to edit
the locked cells and they can able to edit unlocked cells only.
Until unless you protect your worksheet with a password the locked and
unlocked settings will not get activated.
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