How to select an alert tone for notifications from the app?
To select an alert tone
1. Open the Bigin app on your iPad.
2. Tap on Settings 
at the bottom right of the screen.
Under "General", you can find the title "Notifications".
3. Tap on Notifications > Sound.
4. In the screen that opens, tap on the Alert Category Dropdown
.
5. Select "By App".
Once you've selected the alert category, you can tap on the title of the desired organization under "Alert Tone" to set its respective alert tone from the list of available sounds.