When reviewing the Project Details page, you may find that there aren't any upload slots under the Requested Information section or looks as if it's missing some upload slots.
This is because the Requested Information for each project differs and is set directly by the bid administrator; the cause for this differs from project to project. This could be the case where the Requested Information slots weren't set up properly by the purchaser, or because the purchaser wants you to make your submission outside of Bonfire (e.g., delivery of a physical hard copy, electronic submission on another site, etc.)
Either way, in these cases, read the tender documents carefully as usually submission instructions are enclosed there. For more details on viewing the supporting documents, take a look at our Where do I download the documents for the opportunity? page.