Add Folders to Your Project
On the Explorer page, click the Add button.
Select Create folder.
4. The Create Folder in… dialog box opens.
5. Type in the folder name.
6. Click Submit.
The most common error is caused by the folder name. Folder names must be unique. If you attempt to create a folder with the same name, an error will show and not allow you to create the folder.
You do not have permissions to create a folder inside the selected folder.
The folder name you have chosen contains a character that is not allowed.
See Naming Conventions for details.