When you get a new concern, you need to mark the concern as read. Otherwise, you might receive notifications saying that you have new concerns to read. You should only have new concerns on your Dashboard page.
If you are tagged into a new concern, this appears on your dashboard below the coloured boxes and you have to mark it as read. Also, if there are pupils in the "New Concerns" box on the dashboard, you can click on this list to view the pupils profiles and click on mark as read on the concern in their chronology.
It's important to keep on top of these new concerns coming in so they don't build up.