A layout can be locked so that no changes at all are permitted unless and until it is unlocked. This includes item rotation, cell spacing, aspect ratio or window zooming.
To Lock or Unlock a Layout
1.Right-click on the Viewing Grid of the layout you want to lock and select Layout Settings in the context menu.
2.In the General tab, click the Locked toggle.
3.Click OK to accept or Cancel to discard changes.