Company Requirements: Gamification
Required User Privileges: Company Admin / Competition Admin

The first step is to click on Competitions in the left side menu. 

Click on the settings icon to the far right of the competition and click on Edit.

You will be presented with the competition creation wizard, identical to the one used to create the competition:

In the wizard, you can change everything from the layout of the competition, to the winner's prize(s). Simply navigate to the different configuration sections by using either the navigation menu on top or the arrows at the bottom.

Click on Save in the top right when you are done editing.