There are two types of bookings that can be made via the Careem app; Now bookings and Later bookings.
These are on-demand instantaneous bookings, where a Captain is assigned to the booking immediately and start moving towards the pickup location, ensuring the shortest wait times possible.
Now bookings are good for general commuters and getting around your city.
These are pre-scheduled bookings, where a Captain is assigned to your future booking in advance. This ensures he or she is not busy near the time of your booking and arrives at the pickup location on time.
Later bookings are good for important meetings, airport runs and extremely busy times.