Which harness slot should I use when forward-facing my child? January 14, 2022 20:27 Updated The harness slot at or above the child’s shoulders should be used when forward-facing. Related articles What are the height and weight requirements for the Orbit Baby Toddler Car Seat to be used forward-facing? How do I clean the Orbit Baby Toddler Car Seat? When can the SmartHub® base be used with the Toddler Car Seat? Can I use LATCH to install my Toddler Car Seat? Do I have to use the SmartHub® base?