Here’s a step by step process on how to add new invitee to existing Calendly invite:
- Go to your 'Scheduled events'.
 - From your 'Scheduled events' in Calendly, click the booked event you wish to add guests to.
 - Select 'Reschedule'.
 - If you are not moving the date/time of the meeting, select the booked invitee’s 'former time' as indicated on the left hand side of the reschedule page.
 - Select 'Add Guests' beneath where your existing invitee’s email will pre-populate.
 - Add the email addresses of up to 10 guests you wish to add to the meeting under 'Guest Email(s)'.
 - You can then add a reschedule note to provide clarification to your invitees that the meeting time is not rescheduled, but that you are simply adding more people to the meeting.
 - Click 'Update Event'.
 - A notification pops up confirming the action.
 - You will then be able to see your new additional guests from the event details in your 'Scheduled events page'.
 



