How to sort/organize a set of folders for instance: Inbox.Employ.

[Bob]

I have created a set of folders under the Inbox in a heirarchy of
Inbox.Employees.Employee1, ...Inbox.Employees.Employee2. When the folders
were created they were in random alphabetical order.

How do I organize the folders into sorted alphabetic order.

I can't drop and drag because the folders are dropped into one of the
folders near the place I want to put it.

Thanks,
Bob