How to: Protect graphic objects on a worksheet.
Solution:
Select the worksheet containing the graphic objects to protect. Select 'Protection' and then 'Protect Sheet...' from the 'Tools' menu. Select the 'Objects' check box in the 'Protect Sheet' dialog box.
1) Open the desired workbook.
2) Click the tab for the worksheet that contains the graphic objects to protect. (The worksheet is selected.)
3) Select the 'Tools' menu and select 'Protection'. (A submenu appears.)
4) Select 'Protect Sheet...' from the submenu. (The Protect Sheet dialog box appears.)
5) Select the 'Objects' check box.
the Objects check box
6) (Optional) To prevent others from removing the protection:
a) Type a password in the 'Password' box.
b) Click 'OK'.
c) Reenter the password in the 'Confirm Password' dialog box.
d) Click 'OK'.