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