How to use and set advanced notification features on your Samsung Galaxy smartphone

Advanced notifications settings
You can configure notifications from apps and services.
◌ From Settings, tap Notifications > Advanced settings.

• Sort notifications: Choose to sort by time or priority.
• Filter notifications: Modify how many notifications appear on the Status bar.
• Notification history: Display recent and snoozed notifications.
• Conversations: Display conversation notifications. Touch and hold a
  conversation notification to mark it as priority, set it as alerting, or silent.
• Floating notifications: Enable floating notifications in either Bubbles or Smart
  pop-up view.
• Show app icon in notifications: Enable app icons in notifications.
• Suggest actions and replies for notifications: Get applicable suggestions for
  actions to notifications and replies to messages.
• Show snooze button: Enable to display a button to quickly snooze your
  notifications.
• Repeat notification alerts: Enable and customize periodic reminders about
  notifications from selected apps and services. Clear notifications to stop the
  reminders.
• App icon badges: Identify which apps have active notifications with badges
  that appear on their icons. Tap to choose whether or not badges indicate the
  number of unread notifications.
• Manage notification categories for each app: Show the notification
  categories menu on the notification settings screen for each app.
• Wireless Emergency Alerts: Customize notifications for emergency alerts.