Notifications > Change Default Sound

Good day, I always "search" before I ask, and am here, but not getting my answer

https://www.traccar.org/documentation/notifications/

In what folder and file may I change the default alert sound and also how long the pop up on the web stays shown please?

Thanks in advance, Jim

You can replace beep.wav file in the web folder. As for length, you should check ExtJS documentation.