SINGLE LEVEL, Over-the-Seat KARGA Assembly Instructions
The installation is the same for both 40% and 50%, but the orientation is different. The 40% has the narrower part of the KARGA by the child seat anchors, while the 50% has the longer part of the KARGA by the anchors. The following video is of a 40%, but has the same basic principles, just with that orientation.
And/or