Enable the Publish Module.
Define the default privacy for each newly uploaded media. Prior to this change, each newly uploaded media's status was set to "Private" as the default. Now, MediaSpace administrators can configure every newly uploaded media to be set as "Unlisted" by default, and allow the media owner to change the privacy mode. To configure this option, set the required value for defaultPublishStatusOnUpload. Note that this configuration is applicable only if Unlisted mode is enabled on your MediaSpace instance. You can check if it is enabled under Application > enableUnlisted.
Enable publish to a list of categories - from the menu, media, and upload. Disable this if you do not have access to the list of categories.