Pages can be published at specific times.
For example, you can prepare a press release, and schedule it to go live at a specific time.
The counterpart to scheduled publishing, a page can be given a scheduled removal date.
This is helpful if items are know to have a limited validity time, after which they will be automatically removed from the site.
Typically such pages are de-listed, so that they are removed from main site navigation, but remain on the site as an unlisted page, so as to avoid 404 errors.
Draft pages can normally only be viewed by Zenario administrators.
With staging mode, you can generate a link that you can send to a non-administrator colleague, so that they can view the new or revised page without needing a password.