What to do if you click 'submit' before you are ready?

You can re-attempt your assessment

Students should review their answers before submitting. When you click Save & review you'll see a Summary of attempt screen showing which questions have been answered. 

submit

If you click on Submit all and finish before you're ready, you'll need to re-attempt the assessment by returning to the assessment overview page and clicking Re-attempt quiz (don't worry, all of your previous responses will be there).

Summary of attempt

Finish off the questions you missed or upload any files you need to and resubmit the assessment.