The Calendar team is working thru plans for Meeting Delegation.
Thank you for your continued feedback. The feature team is actively working on this highly requested feature. We are testing the first release that will have the ability for meeting hosts to create breakout rooms, assign the users to the rooms and call them back to the main room. Please see our roadmap for current status here: https://www.microsoft.com/microsoft-365/roadmap?filters=Microsoft%20Teams&searchterms=65332.
This request is still on the backlog.