Can't embed a view in UIScrollView

I have created a view and the content is larger than the screen. How do I add this view as a subview of a scrollview? For some reason I can’t do this in Document Outline. It will only let me add the scrollview as a subview of the existing view.

If I select editor -> embed in from the menu after clicking on the view, scroll view is greyed out.

Thanks!

Not sure why, but the issue was that I was selecting the top most view. The only option for this view is embedding in a navigation controller or tab view controller. So adding a scroll view under that and adding everything else beneath is a non-issue.