A Portal Administrator can create a new community folder in the Portal Administration. To create a new community folder:
Open the Communities tab in the Portal Administration.
Click the New Community Folder link in the side navigation bar.
The New Community Folder page opens.
Select the parent folder for the new folder. The root folder is named Default Community Folder.
Enter the name and Web-Friendly URL for the new folder and click Save. Remember that the Web-Friendly URL can contain only alphanumeric characters. Non-alphanumeric characters will be stripped out.