The order of layers within an image is critical to the appearance of the image. To rearrange layers in the image, you can easily change the stacking order of layers in the Layers palette. If a layer or a layer group has components, such as vector objects or grouped layers, all of the components move with the layer or layer group when its position in the stacking order is changed.
When you drag a layer, the cursor changes to a hand. A cursor displaying a null symbol
indicates that the selected item cannot be moved to a particular position.
You can also move a layer or layer group by choosing Layers
Arrange and then choosing an option.