Select, group, and link layers

You can select one or more layers to work
on them. For some activities, such as painting or making color and
tonal adjustments, you can work on only one layer at a time. A single
selected layer is called the active layer. The name
of the active layer appears in the title bar of the document window.

For
other activities, such as moving, aligning, transforming, or applying
styles from the Styles panel, you can select and work on multiple
layers at a time. You can select layers in the Layers panel or with
the Move tool .

You
can also link layers. Unlike multiple layers selected at the same
time, linked layers stay linked when you change the selection in
the Layers panel. See Link and
unlink layers.