You can share your appointments with internal as well as external partners. Depending on the requirements, different methods exist.
To make a calendar available for internal users or external partners, proceed as follows:
Create a new personal or public calendar.
You can also share an existing calendar.
If another internal user shared a calendar with you, you can access this calendar in the folder view.
In case you want to invite external partners to an appointment, enter their E-Mail addresses in the input field below Participants.
The external partners receive an E-Mail with an appointment invitation.
Also see:
Parent topic: Appointments in teams