For secondaries, having a clear idea of what a student's day has been like so far can give you a real advantage in controlling behaviour and channelling learning.
For primaries, it may be more useful to see whether they have been present over the course of the week.
On registers, teachers can see an info panel showing their attendance so far that day or week.
To switch between day or week view, go to School > Programmes > Lesson Settings.
The week view will display in registers like this. Notice the days work backwards in time from right to left.
The day view will display in registers like this.