Hello @minhanhle,
Thank you for responding.
For your concern, you understood correctly. There are no service packages or upgrades that allow an organizer to remotely turn on participants’ microphones in Microsoft Teams.
As I mentioned earlier, this is designed to protect user privacy and security, and Microsoft does not provide any plan or add-on that overrides this behavior.
However, I understand that in an educational environment, you may need better control to manage the quality of your sessions. Therefore, I encourage you to raise this suggestion directly through the through the Microsoft 365 Feedback Hub
The development team can consider this feature in the future. Your feedback may help us revive or introduce features that make a real difference.
If you've already submitted feedback, please share the link here, so not only me, but others can also vote it up.
Waiting for your reply!