Turn Off Entry and Exit Notifications
You can turn off beeps and name announcements if you prefer not to hear notifications while you are engaging with participants.
When you schedule an event or training session in Classic View, select Audio Conference Settings > Entry and exit tone > No Tone.
In Modern View, go to Preferences, select Audio and Video, and from the Entry and exit tone drop-down list, select No Tone.
When you schedule a meeting with the Quick Scheduler, click Change audio conference and select No Tone. When you schedule a meeting with the Advanced Scheduler, select Audio Conference > Entry and exit tone > No Tone.You can also turn off the notifications during a meeting. From the Participant menu, click Entry and Exit Tone to clear the check mark.