How to add a Client or Contact as an attendee to a calendar Event.
Inviting Clients or Contacts to your calendar Events as an attendee does not require any calendar integration (E.g. Office 365 or Google).
Before you begin, be sure to 'Enable ICS email notifications' in Settings. This will enable calendar notifications for all users in the account.
NOTE: If you have calendar integration turned on, you DO NOT need to enable ICS email notifications.
2. On the bottom-right, click to 'Enable ICS email notifications'.

NOTE: You will not see this if you have calendar integration turned on.
3. Navigate to the Contact record and add or update the email address. The email address for this Contact record will receive the calendar event invitation.
If you are using calendar integration but have not enabled contact sync, make sure the Contact email address is the same in Rocket Matter and the alternate calendar currently syncing (Outlook, Google, etc.).
