A theatre evening (ie an evening at the theatre) has been arranged.
We arranged to meet at the cinema at 7.30, but he failed to turn up.
I have arranged for a car to pick them up at the station.
It had been arranged beforehand.
He arranged a parley with us.
We'll carry on as arranged and they can do their worst.
I've arranged for a car (to meet you at the airport).
I have arranged that one of my staff will meet you at the airport.
They lived in neatly arranged little houses.