How to identify detached students and their detachment lesson?

To identify a student who has been detached from their original lesson, select the original lesson on the grid, then click on the button in the top right-hand corner. By ticking the Enrolled students, the list of students appears on the right-hand side of the screen.
To see which students are detached from the lesson, click on the button at the top right of the list: the same icon appears in the list opposite detached students.
To find out exactly which lesson a detached student is in, hover your mouse over the icon: the name of the class and the teacher in charge of the student appear in a tooltip.