Jtsi in class online

I can use Jtsi in online classes. How can I configure it for students not to use it in the microphone configuration? They are having side conversations and this hinders the progress of the class.
I change students, but some play, they also change me and this delays the teaching-learning process.

Marcela Dãmaris

Are you using meet.jit.si or a self hosted version? If it is self hosted you can change startAudioOnly to true, which should mute everyones microphone on default.

Otherwise, you can also manually mute participants if you are the moderator, by hovering over the desired person and clicking the ... menu. This will allow you to mute that person.