The class activity feed
The Activity feed is a real-time stream of what students are doing right now - help requests, submissions, exam flags - the view a teacher watches during a live session.
Select the class, then open Activity. Help requests surface here the moment a student raises one - no polling, no refresh needed.
Activity is where you notice a stuck student in real time, before it turns into a missed assignment. See "Class analytics" for the pattern-spotting view of the same class instead of the moment-to-moment one.