Ordering together
One delivery for everybody in the car, split evenly. You each order your own food and pay for your own.
Start a group
So they know whose group they joined.
When it arrives
Order now, get it around 5pm today
A car of your own, because no run is going in time for this. Everybody who joins is told the same time.
This is an estimate, not a time to the minute. Half an hour either way is normal, and you are called when the food is at your block.
Not ordering with anybody? Order on your own.