Every challenge has a Submission tab that reflects the fields the creator configured in their Submission Builder — this might be a written proposal, file uploads, links, or a mix. You can save a submission as a draft and come back to it as many times as you like before the deadline.
Once you submit, most challenge types let you keep editing right up until the submission window closes — check the challenge's Overview tab if you're unsure whether late edits are allowed for that specific challenge. After judging opens, submissions are locked.
