1, open Exele, press CTRL + A Select all, press and hold ctrl+1 selection format cell.
2. Select the last protection in the window that formats the cell to remove the hook in front of the lock in the protection.
3, click the Format under the Start menu, click the Protection cell, the following interface appears, remember the first (selected unlocked cells) do not hook, the second hook.
4, click "Finish" will need to enter the password, you enter two times password on it.