There are some things only a developer can do. When I have a task that doesn't require a developer -- that anybody can do -- and I need to call that out, I'm stuck for a great way to describe those people. "Non-developer" is the pithiest, most descriptive one I can think of, but I do not love it.
This UI would enable non-developers to alter the app configuration.
Though it's a different question, seems I'm not alone.
Clarification: The people I'm imagining are using an app which helps to create apps; therefore, anything involving user is unhelpfully ambiguous. They are not system admins, either. Probably the best analogy is designers, but that has a specific meaning in this world (UX & graphic designers), and I don't mean them either.