Enter your property's Admin Area by selecting the option Admin Property Dashboard from your User Menu.
Once in the Admin Property Dashboard, select either the Active Events option on the navigation sidebar or clicking on Manage on the Active Events tile on the main area of the page.
From the Active Events index, search for the event you want to archive by placing your cursor at the Search field, and typing part of the name of the user you wish to add.
The event will now be displayed in your search results. Next, click on the cogwheel icon on the far right to begin editing the user.
Next, click on the Configure Event button, which can be found at the top right of the page
Finally, click on the Archive button, which can be found on the right-hand column of the page.
You will be asked to confirm that you wish to archive the event - archiving your event will remove it from the My Events list and will also remove the ability for event users to access or interact with the conversations added within it. Select Yes if you wish to proceed.
Congratulations - you have just archived your event. The archiving of your event may not be instantaneous (depending on the amount of information and users within the event), so if you see your event still present in your Active Events, don't worry - it will be removed when the event's data has been archived 'under the hood'.
To leave the current Admin Area and return to your events, select the Exit Admin Area button found at the top left of the page.