Here's what Hawkeye is saying.........
Let's say you have an image...
[ATTACH=full]121110[/ATTACH]
You make a selection of the Basketball for adjustments and you copy it to it's own layer using Cmd/Cntrl + J.
[ATTACH=full]121111[/ATTACH]
[ATTACH=full]121113[/ATTACH]
Then you decide you want to include the Tennis Ball for adjustments as well.
So yo make a selection of the Tennis Ball and copy it to it's own layer.
[ATTACH=full]121114[/ATTACH]
[ATTACH=full]121115[/ATTACH]
You want both to have the same adjustment so you group them together......
[ATTACH=full]121116[/ATTACH]
And clip the Adjustment Layer to the group!
[ATTACH=full]121117[/ATTACH]
Make your adjustment and all the selection s you made (within the group) will be affected.
[ATTACH=full]121118[/ATTACH]
