Book for later is only available for next-day ride request.
From the ride page
choose date for your ride
Provide more details such as pick-up time, purpose and necessary supporting documents such as invitation letter. For Airport transfer, TRAVEX and flight itinerary are required to confirm your ride request.
Once booking is submitted, your ride will be marked as 'Pending' until a driver has been assigned. You will be notified on the confirmation
via email and push notification.
Your booked ride can be found in Activity > Upcoming. You may 'Cancel' the booking in the ride details screen