Now, as an appointment, the time is marked as busy on your calendar.
If you add attendees, your appointment becomes a meeting.
If you’re using Microsoft Dynamics CRM 2015 for Outlook or later, you can also synchronize appointment attachments if your system administrator has enabled this capability.
If the exchange appointment is successfully updated, no out is returned. To make changes to an individual occurrence within a recurring event, use the 'Exchange Appointment Find Occurrence' combined with the 'Exchange Appointment Update' handlers.
For an update, the only data that needs to be entered is the Appointment ID and the Send Invitations fields.
This gives you the ability to keep your personal appointments separate from your Dynamics 365 appointments.
Synchronization of appointments from Dynamics 365 to Dynamics 365 for Outlook is automatic, however.