Creating Subfolders
You can create public folders that appear as subfolders. However, to do so, you must have been granted permission by the top-level folder owner, also known as the publishing author.
To create a subfolder
-
In Microsoft Outlook, select the parent folder.
-
From the File menu, choose New Folder.
-
If you are writing a Messaging Application Programming Interface (MAPI) function call, use CreateFolder() on the parent folder object.