You can easily archive events you are no longer using. This effectively hides the event from all students but allows you to make it active again at a later date.
To archive an event, navigate to your Administration panel, and under Live Sessions/In-Class Training select Manage Events.
Find the event in question, click on the Manage Event option, and then select Archive. Then add a reason in the box that appears and click Archive Event.
Please note that when it comes to bundle events, if you archive the master event then all the other offers will be archived as well.
After you archive your event you will be able to find it under the Event listings page, the Reporting features, and the Manage Events page, if you filter for Archived Events.
Read more: How can I restore an Event I have archived?