Protect or unprotect a worksheet

1. On the Review tab, select  Protect Sheet.

2. Choose what to allow users to do, enter a password, and select OK.

3. Enter the password again, and select OK.

To Unprotect the sheet, go to Review, choose   Unprotect Sheet, enter the password, and select OK.

For more info, see Lock or unlock specific areas of a protected worksheet.

1. On the Review tab, select  Protect Sheet.

2. Choose what to allow users to do, and enter a password.

3. Under Verify, enter the password again, and select OK.

To Unprotect the sheet, go to Review, choose   Unprotect Sheet, enter the password, and select OK.

For more info, see Protect a worksheet in Mac.

1. On the Review tab, select   Manage Protection and turn on Protect sheet. 

2. Choose Ranges, set Options, and optionally, add a Sheet protection password. 

3. Select Save. 

To unprotect, go to Review, enter the password, and turn Protect sheet off. 

For more info, see Protect a worksheet.