Participants can't upload a file to Knowly as their answer. Trainers add plenty of files when building a journey — images, video, documents — but on the answering side, an assignment collects a written response or a checkbox confirmation, not a file. When you genuinely need files back from participants, point them to an external upload location and have them share the link in Knowly.

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Knowly uploads and stores files in lots of places when you build a journey, but those are for the content you add. On the participant side, an assignment answer is either a text response or a checkbox confirmation — there's no attachment or file-upload answer type, so participants can't submit a document, image, or video directly as their answer.

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Set up a shared upload location your participants can reach — a OneDrive or Dropbox folder, a Microsoft Form, a Google Form, or something similar that accepts uploads. In the assignment, give clear instructions and the link, and ask participants to upload their file there, then paste the link or a short confirmation in their Knowly answer.

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Knowly records the written answer, not the file itself. You review the uploaded files in the external service, and use the Knowly answer to see who has submitted. If tracking each submission inside Knowly matters more than collecting the actual file, consider whether a written answer on its own would meet the need.