Alphabetic Sorting

Creating a project and the default Sort Language
The default Sort Language is applied to the root folder when you first open a new project. But you can change the Sort Language of any folder at any time (expand the 'Sort Preview' button for the folder). The default Sort Language is also used in various other situations in the life of a project (like, for instance, as a default for index sorting).

When a new folder is created, it inherits the Sort Language of its parent
When you create a folder, it inherits the Sort Language of its parent. But you can change this setting per folder (expand the 'Sort Preview' button for the folder).

Alphabetic Sorting is Automatic
You don't have to do anything in order to have alphabetic folders sorted. Folders' contents get sorted regardless of whether the 'Sort Preview' button was pressed or not on a particular folder.