Put the turnstiles in a configuration such that everything is connected.
It took me a puzzle and a half to figure out it's the white parts, not the black, that need to be connected. (For the first one it actually worked to connect all the black lines.)
Maybe you could change something in the formulation to make it more clear.
Thank you for the feedback - I have updated the English summary to: "Put the turnstiles into a configuration such that one can walk past each (without them needing to rotate) to get to any other (white) part of the puzzle."
I hope you think that is clearer, but do let us know if not!