During or after completing a challenge, you can add it to your favourites. This is useful because it easily allows you to find the challenges that are most relevant for you in the Archive. You can do this in two different ways. For both ways it is important that the question has already been answered. You cannot save a challenge if you have not yet answered the question.
The first way to add a challenge to your favourite is within the Discovery menu. If you click on 'Add challenge to Favourites', the challenge is saved as a favourite and the star turns orange.
The second way to add a challenge to your favourites is while you are giving feedback. A button appears that allows you to save the challenge as a favourite. When you click on the star "Add this challenge to your Favourites", it turns orange. This means that the challenge has been saved to your favourites.