Locking the Tile Positions
You can lock the tile positions and prevent accidentally rearranging them.
To lock the tile positions
Do one of the following:
Choose Arrange > Lock All Tiles (or press L).
Click the Graphical tab’s Lock button.
Tile position lock button
You can use the same button and keyboard shortcut to unlock the tiles. If you need to
move any tiles while they are locked, you can press the Option key, then drag the tiles
to the new location.
While the tile positions are locked, you are still able to change your view of the tiles by
zooming or using the scrollers. You can also change the connections view.