Becky's answer confused me. That PI only manages Series type columns.
Readers (devices) tend to use 2 data methods to display book lists.
The old File Name (folder) method for really simple viewers.
The Metadata present in the book method.
The
Send To... templates control file and folder naming. The metadata is not touched in the book by this (Send... does cause it to be refreshed by the current Calibre data). If you do not use the File Browser on the device to locate books, this is not that useful.
The (Metadata) Plugboard modifies the metadata in the
Sent book to compensate for devices that do not support that type. A Common usage is put {Series_index} - {Title} ->title so you can sort in reading order