I'm completely new to AppStudio and Qt and I'm really trying hard to get started, but the documentation is highly lacking. Anyway, I've downloaded some example apps and all of them have their initial <appname>.qml file importing another file from within a subdirectory in the project.

In the above picture, MapViewer.qml is importing MapViewerApp.qml, which is located in a the MapViewer subdirectory.
I'm trying to figure out how to create a subfolder in the project through QtCreator but even Google is not giving me any helpful information because it wants me to edit a .pro file which doesn't exist in an AppStudio app.