When new content is added, for example, a new item to the Main Menu, the item defaults to Preview mode. This allows the item to be previewed before making it live. An item in Preview mode is indicated by its color. It will typically be yellow, orange, or another warning style color.
To view changes as they're applied, on the Admin menu, select General > Preview Campus. A new tab opens, containing a view of Performance and reflecting your updates. Note that the Admin button is not available in this view as you are in Preview mode and have not actually returned to the campus. After you have reviewed your changes, close the Preview tab to return to the Admin screen.