If there is a need for an attendance report while Google works out the kinks, employees can submit a request for an attendance report using this service.
Original Post 10/7/20:
At this time, Google has announced that they have paused the Attendance Report feature temporarily. This means that you will not be receiving an email after your Meet has ended with the attendees and their attendance information right now.
Please make sure to check the ITS blog and announcements frequently, as we will post an another announcement when the feature resumes.
For more information about this feature and the pause, please reference this link.