I was just created a new storyboard for test, rather than bother the main storyboard. so when if I was testing, I would like to use the new storyboard I can managed add some view controllers, and I can start the storyboard as well as one of the controller in source code, but how to make a view controller in the storyboard, as there isn't the arrow as the main one!

Do you mean how can you designate a view controller as the storyboard's root view controller? Select the view controller, open the Attributes Inspector, and select Is Initial View Controller.

Select the view controller and in the Attributes Inspector, check the "Is Initial View Controller" checkbox.
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