The New Folder (Milling > Setup > New Folder) function is used to add folders inside a Setup.
Folders can be used to group toolpaths by type or keep multiple configurations of toolpaths. Create different toolpath operations groups, for a variety of cutting options.
Toolpaths in Folders ordered by type.
Selecting New Folder adds a folder to the active Setup. If you select a Folder and select New Folder again, it creates a folder inside the selected folder.