Mine is in the passenger side rear seat. Latched to the anchors and clipped over the headrest to the rear anchor. The head rest get deformed due to the restraint strap and I hate that. I tried the middle but it too elevated and blocks you rear mirror view. In the passenger side rear seat, you can turn to easily see them, or even turn your mirror as need. Most people will tell you to put them in the middle. That might work for the infant seat but not a full sized toddler seat in this car. Congrats to any new fathers or mothers here. It's a life changer.