You can
drag and drop objects from one cell in the layout grid to another.
If you
attempt to drop a new object into a cell that already contains an
object, then a warning message appears. If you click
OK, then the current object is replaced by the moved object.
If you
attempt to move an existing object into a cell that already contains
an object, then a warning message appears. If you click
OK, then the current object switches places with the
moved object.