Originally Posted by johan rebel

No you don't, and yes there is. When you've dropped of your bags you make your way back to Terminal 2, preferably along the "back wall", so to speak. Just past the very conspicuous entrance to the Privium Lounge you will see the "back door" to priority security ahead of you. Present your boarding card and follow the crowd up the stairs/escalator. Once upstairs just go with the flow.

Johan