Organize playlists in folders in iTunes on PC
To help you organize your songs, movies, and other items, you can create folders, then add playlists and other folders to them. (You can’t add individual items directly to a folder.)
In the iTunes app on your PC, choose File > New > Playlist Folder.
Type a name for the folder and press Enter.
To rename a folder, double-click it and type the new name.
To add items to the folder, drag playlists or other folders into the folder.
To move a folder out of another folder, drag it toward the left edge of the iTunes window.
Note: If you want to change the order of the items in the folder, select the folder, then choose View > Sort By.
If you delete a folder, all the playlists and folders inside that folder are deleted; however, the songs in the playlist or folder remain in your library and on your computer.