It’s a process of announcing or informing about a new activity to the users of an application.
All Notifications :
To access All Notifications, go to Admin Panel->Notifications->All Notifications
All "Tickets" related notifications are displayed on this "All Notifications" page. You can delete the notification manually, or you can filter the notification by searching and clicking on the check box in the "Filter Notifications" section. If you enable a setting under "Auto Notifications Delete Enable/Disable" in Admin Panel->App Setting->Ticket Settings and set a number of days to automatically delete the notifications, then the notifications will be deleted automatically.