An effective online court booking system requires a clear operational scheme, a rental time data structure, and an instant payment workflow. Operational Scheme & Rules: Operating Hours: 06:00 – 23:00 WIB (Slot duration: 60 minutes/session). Payment Deadline: 15 minutes after booking; otherwise, the slot is automatically released. Cancellation Policy: Rescheduling allowed up to 1 day prior; no refunds for same-day cancellations. Booking Limit: Maximum 7 days in advance to prevent slot hoarding by a single user. Time Slot Rate Structure: Session/Day | Time Range | Pricing Scheme | Notes | Weekday Regular | 06:00 – 15:00 | Rp75,000/hour | Off-peak hours | Weekday Prime | 15:00 – 23:00 | Rp120,000/hour | Peak hours | Weekend All Day | 06:00 – 23:00 | Rp150,000/hour | Saturdays, Sundays & Public Holidays. User Booking Workflow: Select Court & Date: User selects the court type (e.g., Court A/B) and playing date. Select Time Slot: System displays an interactive calendar (grid view) showing slots as Available (Green), Pending (Yellow), or Booked (Red). Data Entry: User inputs Full Name, WhatsApp Number, and Email. Payment: Payment options via QRIS (OVO, GoPay, ShopeePay, BCA/Mandiri) or Virtual Account. Automatic Confirmation: E-ticket QR code and invoice are instantly sent via WhatsApp & Email upon successful payment. Recommended Platform: Use ready-made SaaS platforms (instant & affordable): YukBooking, Avenue, or Mevuto. Suitable for immediate use without coding. Use a self-hosted WordPress plugin: Utilize Amelia or WooCommerce Bookings integrated with local payment gateways like Midtrans or Xendit. Custom Software: Specially developed using React/Node.js for multi-branch sports center businesses requiring complex membership features.