How do I create a new folder below an existing folder?

Finder only displays files and folders in: Name, Date Created, Date Modified, Size, Kind and Label.

I assume you are viewing Finder in List View, and want a particular folder to appear in between two folders? I do this in certain circumstances by naming folders like this: 1.Jan 2.Feb 3.March etc.

Not the exact solution you are after, and I can't say whether it is possible what you are trying to do, if I fully understand your question.

 

The way you're doing it, you can't. Although you can view the contents of subfolders in list view, when you create a folder, it is created in the folder that is currently displayed in the finder window. If you want to create it in a subfolder, either drag it in, or double-click the subfolder to make it the active folder.