First, set up your campaign details by creating a new Reward.

On Save, your campaign widget should appear in the Preview tab of your campaign summary page. Feel free to tinker with the campaign widget and make some test entries/claims.

The campaign widget is fully functional on the Preview tab, but if your campaign is not yet live then no one will be able to access your campaign. If an entrant sees the campaign before the start date, they will see a message like this: