There's already a post similar to this, which describes there is no built in shortcut to deselect multiple layers, but I can clarify my problem a bit.
click will select a layer in Photoshop.
click will select multiple layers.
However, after i've selected multiple layers, if I try
click again on a single layer, it won't deselect those multiple layers and only select the one layer.
Is there some way around this, such as by deselecting a layer with some key combination, or something? I don't want to resort to custom keyboard shortcuts. I want to have a fast workflow using Photoshop on anyone's desk.