First all where are you located as the scoot could be different depending on what country it is sold in. As far as how it's supposed to work if your headlights have a clear lens you should be able to see how many filaments each bulb has. One filament single function, dual filaments dual function.
I always thought it kinda odd that most crotch rockets used one side for high and the other for low. I like my Burgman 650's because they have dual low/high beam headlamps. My Kymco MyRoad 700i has two low beam bulbs and a center high beam bulb whereas my Aprilia Atlantic 500 has a single center mounted low beam and dual high beams.