If you want to quickly change the state of a Layer in your project without having to open the Layer Settings Dialog box you can use the Quick Layers palette. Go to Window > Palettes > Quick Layers to activate the palette
Using this Quick Layers Palette you can Show/Hide Layers, Lock/Unlock Layers, Hide Selection’s Layer, Lock Selection’s Layers, Unlock Selection’s Layers, Hide Others’ Layers, Lock Others’ Layers, Undo Quick Layer Actions command , Redo Quick Layer Actions command.