You can get started renaming a new folder in two ways:
Click the Folder Properties icon below the folder list on the left panel then select Rename Folder.
Right-click the folder that you want to rename and select Rename Folder.
Either way, a menu appears. Now do this:
Click Rename Folder from the menu.
Type your new name for the folder and click Rename Folder.
The folder is renamed to the new name.