Viewings, appointments, interviews, deliveries — every one is a chain of messages to agree a time and then remind everyone. This runs that chain end to end.
Someone wants a viewing, appointment or delivery slot.
Open slots are offered; the chosen one is booked and confirmed.
Timely reminders go to everyone; a change updates every side at once.
Three viewings for one unit in a day. Instead of ten messages, each party gets offered times, books one, and is reminded an hour before — and a cancellation frees the slot for the next person.
Works for: Viewings, appointments, interviews, deliveries — any calendar that fills up.