Bulk add group members in Microsoft Entra ID
Bulk import group members
Sign in to the Microsoft Entra admin center as at least a Groups Administrator.
Navigate to Identity.
Select Groups > All groups.
Open the group to which you're adding members and then select Members.
On the Members page, select bulk operations and then choose Import members.
On the Bulk import group members page, select Download to get the CSV file template with required group member properties.
Open the CSV file and add a line for each group member you want to import into the group. Required values are either Member object ID or User principal name. Then save the file.
On the Bulk import group members page, under Upload your csv file, browse to the file. When you select the file, validation of the CSV file starts.
When the file contents are validated, the bulk import page displays File uploaded successfully. If there are errors, you must fix them before you can submit the job.
When your file passes validation, select Submit to start the bulk operation that imports the group members to the group.
When the import operation finishes, a notification states that the bulk operation succeeded.
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