Ordering option is used to change the layout order of report items in design area surface and it’s also known as z-order. It contains the following ordering modes.
Visually move the selected object behind its closest intersected object in the designer surface
Visually move the selected object over its closest intersected object in the designer surface
Visually move the selected object behind all other intersected objects in the designer surface
Visually move the selected object over all other intersected objects in the designer surface