Before you can move or modify layers, you must first select them. Furthermore, you can select and edit a single layer (including layer masks, adjustment layers and fill layers) in isolation.
To select a layer:
Do one of the following:
With the Move Tool selected, click layer content on the page.
On the Layers panel, click a layer.
To select multiple layers:
Do one of the following:
With the Move Tool selected, click the layers' contents on the page while pressing the .
With the Move Tool selected, drag to draw a marquee around the layer contents.
On the Layers panel, -click each layer.
On the Layers panel, -click two layers to select them and all layers between.
To select a specific child layer:
On the Layers panel, expand the parent layer or layer group to show its contents by clicking the layer's arrow.
Click to select the child layer.
To deselect layers:
With the Move Tool selected, click on any empty area of the canvas or anywhere else in the Document view.
To isolate a layer for focused editing:
In the Layers panel, -click a layer.
Select any other layer in the Layers panel to resume standard editing view.