Everything depends on what you want.
If you want the series info displayed BENEATH the title in any of the library views then you need to ensure that calibre Preferences | Sending books to devices | Metadata management is set to AUTOMATIC.
Do note that the info will be transferred on the next connection AFTER your sending the book to the device. ie: send the book, eject the Kobo and let it process the book(s), then reconnect the Kobo, let the metadata sync and re-eject the Kobo.
If you want the series info displayed IN the title of the book then you will need a plugboard as described before.
See these two images
|