We want to make a 1st class seat reservation for EC163 (Zurich 8h40- Innsbruck 12h11) to see the views in the panorama carriage, but we only have 2nd class passes. In the Interrail.eu website, it only appears the option “Seat 2nd class“ but in the OBB wesite it seems to have a choice, as shown in the image below:

Is it possible?