Stream notifications are set up from the Station page under the tab Notifiables. 

To set up a new notifiable, head to “Notifiables” on your station page and click the "+" button: 

To edit or remove an existing notifiable, click on the relevant action button:

Deleting a notifiable will stop further notifications from being sent to that destination. However, a notifiable with escalation enabled may continue to receive notifications of an active, unacknowledged incident after being deleted. To resolve this, resolve or acknowledge the incident in Portal. 

For more information on Notifiables and the various settings you can customise. View our notifications help guide here: Creating Automated Notifications for Stream Incidents