In the RISE, you can control all notifications. Define who'll get which notifications.
There are 3 kinds of notifications.
1. Web: It'll show the onscreen notifications and bell icon on the top right corner.
2. Email: It'll send email to the user's email address.
If you want to see push notifications for the web notifications, please enable the Pusher integration from Settings>App settings>Integrations>Pusher.
In addition, you can enable the Slack notifications also. Once you enable the Slack integration, there will be another column in the Notification settings page to enable any notification for slack.