Designing the screen flow in iOS 5

After you have created the project which relies on the StoryBoard, you will have something looks like below.

To design the screen flow, first, you need to have a Tab Bar Controller. Then, you need two Navigation Controller-s which links to the first screen. After that, you may link it with details or table view controller.

To create the "link" between the controller, click on the Tab Bar Controller. Hold down Control key and drag your pointer to the Navigation Controller. Then, choose Relationship segue.