It would be great to upload a document in many showpad spaces?

Hello Guillaume, Either as a Showpad Administrator or as Showpad User, you can have the same document uploaded in multiple Showpad instances or in multiple sharing methods (Experiences, Collections, Shared Spaces, etc.). There is no limitation in terms of duplicating the file, if that is useful. Please feel free to reach out via our Help Center - https://help.showpad.com - if you'd like to continue the discussion for your specific use case, or get in touch with your Showpad admin.