When your staff member creates an appointment on their Microsoft 365 work calendar, it will block their availability in Bookings. And when a booking is made by a customer using the Bookings online app, that booking shows up on their work calendar. Bookings won't show any personal information in the Bookings calendar. It will only show that the time isn't available for appointments.
Note: Bookings is turned on by default for customers who have the Microsoft 365 Business Standard, or Microsoft 365 A3 and Microsoft 365 A5 subscriptions. Bookings is also available to customers who have Office 365 Enterprise E3/Office 365 Enterprise E5, but it is turned off by default. To turn it on, see Get access to the Microsoft 365 business apps for enterprise subscriptions.
Sync work calendars to Bookings
To sync a user's personal Microsoft 365 work calendar with Bookings, you'll need to turn this on for each staff member from the Staff page in Bookings. You also have to be the Bookings calendar admin to make this change.
Note: You can only sync calendars for users who have a Microsoft 365 work account within your Microsoft 365 organization. You can't use an external calendar, such as Outlook.com.
From the Microsoft 365 app launcher, select Bookings.
Go to the Staff page.
Select the staff member whose calendar you want to sync with Bookings.
In the Availability section, select Events on personal calendar affect availability, and then click Save.