How to Check Responses to Your Meeting Requests in Outlook 2013
Note:
- This also works in older versions of outlook.
To check the status of responses to your meeting request, follow these steps:
Click the Calendar icon in the Navigation bar.
The calendar appears.
Double-click the item you want to check.
The meeting opens.
Click the Tracking button.
The list of people you invited appears, listing each person’s response to your invitation.
Note:
Only the meeting organizer can find out who has agreed to attend a certain meeting.
Source How to Check Responses to Your Meeting Requests in Outlook 2013