It used to be impossible without code, but with Xcode 7, Apple provided us with a powerful tool - Storyboard References .
What you need to do is drag this item into the initial storyboard:

In your settings, you select the desired storyboard and, if desired (by default, uses the initial view controller), set your identifier.

Now you can define a segue for this view controller as usual.
Please note that only regular sessions work with iOS8. Relationships (e.g. root, embed, etc.) only work on iOS9.
Szymon kuczur
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