Changes made to model objects in a Design State will automatically add the changes to the Design State. Changes to internal model object attributes such as x, y, width, height and hidden can be made directly through drag and drop operations as is typical when working with the Storyboard editor. The primary difference with the introduction of Design States is depening on your current Context Mode the changes will either be applied globally or locally.

Keep in mind that additions and deletions are always global operations.