Teams meeting organizer can download the list of the attendee of a meeting in a CSV format. This is also available for Meet Now meeting
First, request your Teams administrator to create/update the Teams meeting policy with the Skype for Business Online PowerShell module (available here https://www.microsoft.com/en-us/download/details.aspx?id=39366) to turn the AllowEngagementReport parameter to Enabled
NOTE don’t forget if you are in a Skype Hybrid configuration (with on-premises systems) you need to use an @onmicrosoft.com user name.
Import-Module SkypeOnlineConnector
$userCredential = Get-Credential
$sfbSession = New-CsOnlineSession -Credential $userCredential
Import-PSSession $sfbSession
Set-CsTeamsMeetingPolicy –Identity <policy identity> –AllowEngagementReport Enabled
Then during the meeting, the meeting organizer will be able to download the attendance list using the Show Participants
