The default setup is to use only the middle button for lights (single click = on; the next clicks are for going through the light scenes; double click = all off), but it's easy to use any button for whatever you want to. It's just a little more fiddling in the Config, because you have to replace the default assignments with your custom setup.
As an example, you can use the five buttons to directly toggle a specified scene. All options are open, but at the cost of using extra logic blocks.