A default setting in the ArchivesSpace staff interface will determine whether the new content you create will be automatically displayed in the public interface, or not. Because creating a finding aid is a lengthy process that requires many revisions before the description is ready to be shared publicly, you should set your default to not publish. This will give you greater control to roll out finding aids as ready.
Step 1: At the upper right corner of ArchivesSpace, click on the drop-down menu next to your username and select My repository Preferences. (For the most of us, selecting My Global Preferences will lead to an error message.)
Step 2: Make sure that the box "Publish?" is unchecked.
Now: Whenever you create a new archival record at any level of description (collection, series, file, etc) or add a note to a record, the box "Publish?" will appear unchecked.