Sometimes views are created but are not meant to be selectable by users (i.e. - test views, Parent-Child supporting views). In those cases, the views can be hidden from the user so they do not appear in the Views drop-down within the component.
To hide a view, drag it from the Visible Views section and drop it into the Hidden Views section.
To make a view visible to users, drag it from the Hidden Views section and drop it into the Visible Views section.