# Know who needs a booster before the car pulls up

Mark which riders need a car seat or booster, and Kid Hop warns when a car doesn't have one. You can also leave a carpool yourself now.

Picking up a child who needs a booster, in a car that doesn't have one, is a scramble nobody wants at 7:45 in the morning.

You can now mark a rider as needing a **Car seat** or a **Booster seat** on their profile, and set how many **Car seats** and **Booster seats** your car has under **Set Seats Available**.
Riders who need one show a car seat icon, and a car that is short shows a line like "Needs 1 booster seat".
Kid Hop only warns you: you can still add the rider, in case a parent hands over a seat at pickup.

If your family no longer rides with a carpool, open it, tap **⋮** and choose **Leave Carpool**.
Your riders and your upcoming rides leave with you, and the other parents see which rides need a new driver.

Both are free for everyone.
See the steps in [How to note a car seat or booster seat](https://www.kidplay.tech/help/how-to-note-a-car-seat-or-booster-seat).

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Source: https://www.kidplay.tech/news/know-who-needs-a-booster-before-the-car-pulls-up