This is to ensure that students are not able to mute other attendees or take control during online lectures.

The organiser can change the roles of the meeting attendees, if for example the attendees need to share their screen.

In addition, if the organiser wanted to give all the attendees the presenter role or they were scheduling a meeting on behalf of someone else, they will need to change the 'Who can present' options to include the people running the meeting.

This guidance from Microsoft explains the different roles and what each can do in a meeting and how to change these during a meeting. 

For further guidance, please visit the IT Services webpages.