If you want to pick up a child under the age of 8, you must carry a child car restraint for kids aged 4–8 years. If a child’s eyes are level with the headrest, they can safely wear a sash belt. If not, that kid needs a booster.
These are completely portable and can be stored in your boot. You don’t get a fee when it’s not requested but you feel good being safe.
To pick up a child aged 0–4, you’ll need to provide a baby seat. From birth to 6 months, the baby seat needs to be rear facing, and from then to age 4 it’s upright – both are bolted. You’ll be paid an extra $9.50 per seat for the baby seat, but no extra fee is incurred for the booster seat (until pre-booking is developed in the app).