The Power of Gray - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 96

Figure 2.19
4. Repeat this process, adding as many textures as you like and trying other blend
modes, such as Soft Light or Hard Light, to create a completely bespoke back-
ground. Then click the uppermost texture layer and Shift-click the last texture lay-
er so that they are all highlighted ( Figure 2.20 ) . Then go to Layer > New > Group
from Layers, name the group textures , and click OK.