Hmmm, looks like it might be the perfect storm for a duck under.
Since it is a lower section, lifting it (either straight up or from one side) becomes problematic.
Since the bench work is square to surrounding bench work, doing a swing out into the center of the room from either side would require some major re-work.
A 90 degree slide out toward the door would basically block the door and defeat the purpose.
I was going to suggest a double hinge and open it like a set of saloon doors, but the placement of that one outside track over that very center section rather negates that idea.
Hmmmm.... I had given up but... . Dropping both sides might make enough room to walk between those two short sections. To do that the hinge joint would have to be perpendicular with the tallest rail head (or anything else that butts together there), otherwise the Pythagoras is going to pay a visit. The two middle, that hinge would then have to be able to have legs that fold up as the sections came down.
This would also make any scenery on those two sections in harms way of people strutting through the gap.