Add sounds to notifications relating to Messaging (Ticketing) via web browser on the dashboard.
By allowing sounds to the messaging
(ticketing) notifications on the web browser, this alerts the staff member
fully unlike just having a pop-up on the left hand side that may not even be
In the web client there IS a sound alert. You can configure it in setting mark (symbol of *) on the right top of your dashboard.
Also check that in "Widget setting" you did not mark "Disable sound notification".