Creating a new folder is very simple. First, navigate to the directory where you want the new folder to be. For example, if you want to create https://www.yourdomain.com/news/, then you would navigate to the public_html directory of domain.com folder.
Next, press "Create Folder" button at the bottom of folders menu. You will see your current Path. You can change it manually if you want to save file elsewhere. Enter folder name and press "Create."