Place the seat in the car. Some deep bucket seats may cause problems for placement. In that case, try the middle position of the back seat. Do not use a pillow or cushion to boost the child. It could slip.
Some booster seats have removable shields.
If the car has a lap-only belt, you must use the shield with the lap belt. If the seat position has a lap and shoulder belt, you may remove the shield from the booster seat and use the car's lap and shoulder harness. The shield does not provide extra protection. Funded trough a grant from the State Safety Office, Florida Department of Transportation.