Disclosed are systems and methods associated with a social network application. A plurality of posts associated with a client system user is displayed. First and second posts in the plurality of posts are respectively associated with first and second recipient groups. While the posts are displayed, a post input area independent of the plurality of posts is also displayed. When the user selects the post input area, it is expanded by displacing the plurality of posts. Concurrently, a content item area is displayed within the expanded post input area. An input, comprising a content item, is received from the user in the content item area. An affordance is presented that enables the user to designate access control information corresponding distribution entities. The content item and the access control information are transmitted to a system whereupon access to the content item is restricted in accordance with the access control information.