Grabbed it from Amazon. The part that holds the lap belt has sliders that slide in and out. My 5 year old is quite slight, so those can be pushed mostly in and sit right beside her. If your child has a fairly large butt then the belt would have to turn a couple of 90 degree angles which might make getting it in and out even more challenging.
I'd take a good look at where the belt slides in to understand how you'll need to slide it back out so that you have an idea before you're trying to get the child out after a ride by feel.
