"Normal" Scroll on Razer Naga Trinity?

Apologies if I'm being stupid, but can't find a definitive answer in the documentation. I've just bought a Razer Naga Trinity - my first Razer product - and wondered if it should be possible to use it as a "normal" scroll wheel (i.e to scroll vertically without pressing the click). I'm used to traditional vertical scroll wheels to scan through documents/webpages, but the new Razer mouse doesn't seem to be able to do this no matter which settings I select in Synapse 3. I have to press the wheel down so the arrows appear, or use the side tilt scroll. Is this expected, or should I be able to spin the scroll wheel without pressing down?