Fairytale Scene - The Photoshop: Professional Retouching and Compositing Tips, Tricks, and Techniques - page 466

Figure 9.66
9. Put all the light spill layers into their own group, and name the group light spill .
Then click the light spill group to make it active, Shift-click the glow middle group
layer ( Figure 9.67 ) , go to Layer > New > Group from Layers ( Figure 9.68 ) , name
it light , and click OK.