Microsoft Shared Bookings ignoring the bookings made by staff members

Hello,

I have tried using microsoft shared bookings and noticed the bookings created by staff members are not in sync with the bookings link.

For example If one of my staff members created a booking for 25th June 2024 10:00 AM. This time slot is still showing for our customers to book. It is supposed to block this particular time slot to avoid double booking. Can someone please help