Preventing Multiple Appointments for the Same Time Slot

[Ummehani]

I would like to know the way to stop multiple appointments from being booked for the same time slot through both the desktop application UI and the API. My goal is to ensure that only one appointment can be scheduled per time slot. Any guidance on how to achieve this would be greatly appreciated.

[SLeon]

Good morning. I moved your API question to the appropriate forum.

A helpful guide for finding appointment openings can be found here.