Once a challenge is created, it is open by default. When you are ready to close your entries, you can do so by:
- Go to your challenge (via your profile page - top right)
- Click on the Challenge settings
- Scroll down to the field that reads
- Set the box to No
- Click Save to update. Entries for your challenge will no be closed. Participants can still delete their own entries, but they cannot add new ones to your challenge.
You can also open entries at any time following the same steps.