How do I add my app as an action menu item in a share view?

For example, when I share a link in Safari, a view appears (iOS’s share sheet) where many apps are displayed with which a URL can be shared. I know that I can display my app there as a share extension. Further below the apps a list with actions is displayed. How can I show a menu item with my app in this list? Unfortunately I can't find any information on this.