If you need to remove a participant from your event, you can do so directly from the participant list.
Here’s how:
Go to Participants → Participant list. Find the participant you want to remove. Tick the checkbox next to that participant only. Click on Deregister. In the deregistration window, you must decide: Registration fee (only for paid events): Should the participant still pay the fee, or should it be waived? Inform: Do you want the system to send an email to the deregistered participant? Click Confirm to complete the deregistration.
Be careful not to mark the entire list, as this will delete all participants instead of just one.
Please note that deregistering a participant cannot be undone. If the participant should attend the event after all, you can re-register them by going to Participants → Other lists → Cancellation list, opening their Personal details overview by clicking on their name, and registering them again.