Hi, @bruce.mcvicar!
I’m afraid, we don’t have a guidance on how to integrate template into app. Although it’s possible, i won’t say it’s easy copying visual elements is simple but copy pasting workflows would require manual manipulation because they are tied to database structure and even if you recreate the same database structure Bubble won’t automatically match the new db fields and would show an error. You would need to manually reconcile each occurrence where it doesn’t see the db field . It’s doable and still easier than creating from scratch. So, to be able to do this, you need to have some Bubble skills (ability to use the Bubble Visual Editor). The difficulty of integration depends on the user’s skills. If you are interested you can find them here https://lab.zeroqode.com , Bubble for Beginners Course | Zeroqode Lab . Also ,please, take a look at the bubble’s lessons and videos to familiarize with Bubble: Lessons | Bubble , Videos | Bubble .
Hope this helps! 
Best, Julia!