You can edit the details of a challenge after you’ve created one. To edit a challenge, click ‘edit challenge’ on the expanded view of the challenge via the drop down option on the far right:

From here, you can edit all the details of the challenge including title, description, attachments, assigning it to new people, adjusting the deadline, adding or editing the reward.

You can also send a reminder email, advising your assignees that the challenge has been updated. To do this, just click ‘send email reminder’ and preview and edit the email before sending. When you click, ‘update challenge’, this will update all your changes in realtime.