If you would no longer like to have a past event appear publicly in your Archive, you may edit the video's privacy settings.
Steps to hide a video from viewers in the Archive
Navigate to your Content Library -> Library tab, and select the video you want to hide.
Select the Privacy menu beneath the video and a dropdown will appear, allowing you to select Private.
If switching to Private, a pop-up window that explains what it means to make a video private.
Select Make Private to finalize your changes.