Navigate to [https://eu.engage.app/settings](https://eu.engage.app/settings)

From here, either create a new queue, or select the pre-existing queue that applies to mobile agents. 

Scroll down and click "Configure queue configs"

Click this dropdown and select either standard or ringing.

The standard notification alert will sound using the default iPhone alert. The ringing notification will last for thirty seconds. The ringing notification will only sound for new notifications - not response messages. 

Once updated, here is how the new notifications will appear on iOS devices, accompanied by the new ringing alert tone. 

Customising iOS Agent Notifications