Calendar: Use the Address panel to invite others to an event
If you have contact information in Contacts, you can use the Address panel in Calendar to quickly invite your contacts to your events.
You can also use the Address panel to invite people who share the same CalDAV or Exchange calendar service (for example, employees at your company), as well as to schedule meeting rooms or other available resources.
- In Calendar, double-click the event and click Edit.
- Choose Window > Address Panel.
- Select one or more contacts in the Address panel, and then drag them over the open event editor.
- When you’re done, click Send.