The middle armrest is easily removed: 1 - middle armrest, 2 - cover, 3 - screw, 4 - pin, 5 - hinge lever.
2. Unscrew screw 3 and remove pin 4 from lever 5.
3. Remove the middle armrest 1.
4. Install the seat in reverse order.
(Information obtained from this resource «AUDIMANUAL»)
