When you set a notification sound, it's set for all meetings, including any meeting that you're currently in. You only hear the sound when you're the host or cohost. The sound plays once every 10 seconds, regardless of how many people have entered the lobby.

1

When you're in a meeting, click Audio options > Audio Settings.

When you're not in a meeting, on the navigation sidebar, click Settings .

2

Click Meetings > Lobby

3

Under Notification sound, check A participant is waiting in the lobby and choose a sound from the drop-down list.

4

Click Save.