[Koha-devel] To add a new filed to search (with ElasticSearch)

Hi to all, how can I add a new field to search, if I use ElasticSearch ? As I have check on wiki and on documentation, I need to use .yaml files. As I know is not possible to add new fields with "Search engine configuration (Elasticsearch)". Or is it possible ? Cheers Zeno Tajoli -- Zeno Tajoli System Librarian