Lesson clashes are displayed at the top of the diary, a red circle will appear to notify you.



By tapping on the notification, the system will identify the date of the clash, the pupils involved and their lesson types.
In this example the Automatic Lesson for Holz Smith will be changed instead of cancelling Marcus's Test.
Tap on the lesson you wish to change.



This will bring you to the Pupil's Summary, tap Edit.  



Change the date of the lesson to remove the clash and then tap the "tick" to save.



You will notice now that the lesson clash has been resolved, the icon has disappeared and the lesson has been moved successfully.