If you're having students complete their own registration to events, then you'll find this new feature useful which allows you to see a list of students whom have yet to register into any events. Here's how you make use of it
1. Access your edit events page of the specific meet you wish to see the report for
2. Select 'Show Unregistered' button
3. Once selected you will be presented with an up to date list of students whom have yet to enter into any events.
4. At this stage you can send an email reminder to the students whom have yet to register, prompting them to do so.