2. In the Inspector, click the Position 
tab.
You can prevent objects from being changed, edited, moved, or deleted from a layout by locking them.
1. In Layout mode, select the objects you want to lock.
2. In the Inspector, click the Position tab.
3. In the Arrange & Align area, click Lock 
.
The handles of each selected object change to 
to indicate that the object is locked.
•Select the locked objects, then click Unlock 
.
•Locking a field in Layout mode does not prevent changes to the information in Browse mode. For details on securing data, see Managing security.
•When you copy or duplicate a locked object, the copy isn't locked.
•Locking doesn't prevent changes to the stacking order. See Arranging objects.
•You can lock panel controls:
•Objects on panel controls won't be locked unless you lock the panel control.
•When you lock a slide control, its position and appearance can't be changed. However, you can continue to make changes in the Slide Control Setup dialog box.
•When you lock a button, button bar, or popover button, you can't change its position and appearance. However, you can make changes in the Button Setup, Button Bar Setup, or Popover Button Setup dialog box.
•Locked objects can't be set to automatically resize when the window is resized. See Setting auto-resize options for layout objects.