Assign participants to breakout rooms using CSV import in Microsoft Teams meetings

Updated May 6, 2026: We have updated the timeline. Thank you for your patience.  Introduction We’re improving breakout room setup in Microsoft Teams by adding support for CSV import of breakout room assignments. This update helps organizers reduce manual setup time and prepare structured meetings—such as trainings, workshops, and large collaboration sessions—more efficiently. This message is associated with Roadmap ID 559387. When this will happen: Targeted Release: We will begin rolling out in mid-May 2026 (previously early May) and expect to complete by late May 2026 (previously mid-May). General Availability (Worldwide): Rollout begins in late May 2026 (previously mid-May) and completes by late June 2026 (previously late May). How this affects your organization: Who is affected: Meeting organizers who use Breakout rooms in Microsoft Teams meetings What will happen: Organizers can import a CSV file to:Create breakout rooms in bulk Assign participants to specific rooms before the meeting starts Imported assignments can still be modified using existing breakout room controls during or before the meeting The feature is enabled by default and does not require admin configuration Existing breakout room policies and controls are respected What you can do to prepare: No action is required from administrators. Inform meeting organizers about this new capability Update internal documentation or training materials as needed Before rollout, we will update this post with new documentation. Compliance considerations: No compliance considerations identified, review as appropriate for your organization.