SharePoint Online: Add an boolean refiner to classical search
Hi all, we've implemented an boolean archive flag that marks archived files with yes. Now I want to add a refiner to classical search to show: - not archived - archived - both Files. My problem is that for the "not archived" case I need something like "Show me all files with archive flag equals false or not defined". Is it possible to implement this with a simple approach? My internet research doesn't give me a helpful answer. Thanks for any advice, Ingrid