Bigbluebutton: Ring a small notification to all the class

[GhaziTriki]

Is your feature request related to a problem? Please describe.
BigBlueButton is being used for memorisation courses. To test the student memorisation the teacher cannot interrupt the student with a single word. However he should be able to warn him if he did a mistake when reciting the memorised text.

Describe the solution you'd like
The solution to this issue could be similar to the method used in real classes. The teacher could click on a button with dull bell sound. Any custom sound notification that could triggered with a button would do the job.

Describe alternatives you've considered
Nothing.

Additional context
Nothing.

[ritzalam]

I think this would be a sufficient solution to this. The ring will be picked by teacher's mic. To dull the sound, a cloth can be put inside.

[ritzalam]

Unless a recording event is necessary to be used in the recording processing later such as for reports.

[GhaziTriki]

The event might be useful for exams. Depending on the type of exam, the number of errors of memorisation put in the class report is important.