yes, this is called nVidia optimus technology (ability to switch between integrated and dedicated GPUs), you should be able to configure it from control panel or nVidia Control panel (your graphics card properties section)
I'd recommend you google Optimus tutorial or something like that to help you figure out how to set it up the way you want it to work
Also, I'm not sure about your particular laptop, but some models have an external button that turns dedicated GPU on/off