Select Save at the bottom of the Create/Edit Challenge popup box to create a new challenge or update an existing one.
Once changes to a challenge have been saved, the new modifications will be immediately applied to all of the User Accounts that are assigned to the challenge. If edits to the Wellable Points Structure are made (excluding Wellable Points for already logged Special Activities), the changes will retroactively be applied to all participants in the challenge. For example, changing the value of the Wellable Points assigned to Meals and Snacks/Other in a challenge to zero, will remove all Wellable Points from Nutrition in User Accounts associated with the challenge.