Locking objects to the map means that you can no longer move them. This has a variety of uses. For example, you may have drawn a complex shape on your map and you could accidentally move the shape with your mouse.
1.Click the shape that you want to lock.
2.Right-click the selected object and select Lock from the menu.
Your shape will now be locked in place.
•If you want to unlock your shape, repeat steps 1 & 2 and select Unlock
See also
To select an overlapping object