Once you Guest can have additional guests into a meeting.
When someone is scheduling a meeting with you, they can also invite more people by clicking on the “Additional Guests” button.
Type in the email of the additional guests being invited. Click the “Tab” button to add more emails.
You can add the meeting to your Google, Office 365, or Outlook Calendar at the bottom of the pop-up. If you do so, you will also be able to invite more users through those platforms later.