A show can have one or several folders. As in the operating system, a folder allows you to add a logical structure to your data by separating and collecting items into different folders.
To remove a folder from the show (including the items within the folder), select the folder and press the backspace key on your keyboard. The items within the folder will not be deleted from the disk.
Removing a folder from a show does not remove the media from the disk. Also having the same media loaded to another folder does not change the content of that folder.