Book chapters can be imported to your Publons profile by navigating to your Private Dashboard > Publications > Import Publications and then using the "Import by Identifier" method to import.
Simply enter the DOI of the book chapter in the correct field. If you are unsure how to find your book chapters individual DOIs, you can go to https://search.crossref.org/ and enter the ISBN into the search bar.
This should return you the individual chapters and their DOIs so you can import them as publications on your Publons profile.
Please note: We currently do not support book publications in our data structure. However, we are aiming to support more publication types in the future.