There are two fitting positions, look at the roof lining behind rear seats and also the roof lining behind the front seats. On the cargo net the steel bar with the mushroom like ends is telescopic and the mushroom ends fit into these positions (push each end in and pull back,will feel it snap in). On the floor below these two points are loops where the hooks on the end of the belts fit. Fit and pull the belts taught.
Hope this helps