Our solution addresses the challenges of scheduling large-scale vaccination programs, particularly for pre-determined vaccine recipients such as front-line workers. Our solution allows for programmatic assignment of vaccination time slots to recipients based on variables such as the number of vaccinators, the amount of vaccines available, the duration of the vaccine process and wait-time. Recipients are messaged to confirm their assigned slot, and if the slot does not suit, the timeslot can be reassigned to another recipient. We also capture responses if time slots don’t work, feeding that information into reporting to help organizations make necessary adjustments. This ensures an efficient and optimized allocation of resources, reducing the complexity of scheduling vaccination programs.