Add a new book to a series

[Julia]

Hi,
I tried to add this book to the SPISe series but it didn't work. Can someone explain to me how I should be doing this? (I did follow the steps I found on goodreads but there's no edit button if I click on the SPISe series) Or can someone add the book to the series?

Thanks for the trouble!

[Abcdarian]

Book added. Only librarians can work on series.

[Julia]

Thank you!!!!