Short version:
As a meeting organiser or presenter, you will be able to lower all raised hands during a Teams Meeting. Early to mid-June.

Details:
As a meeting organiser or presenter, you will be able to lower all raised hands during a Teams Meeting.

When at least one hand is raised, you can use this feature. Navigate to the participant roster during a meeting, click on the ellipses at the top right of the roster, and choose to lower all hands:

Availability:
Standard release will start rolling out in early June and should be complete by mid-June.

MC258800