DTG_Stephen write me : Ah, that is our Dovetail Live Mastery. You can skip the initial screen that is showing the challenges and then when you go in to a lake and start fishing it will track your progress towards those challenges.
When this comes up you can navigate to each of the lakes, then push A on the one you want. This will take you to the page with the list of challenges needed for each level from 1 to 3. Only the current or previous completed challenges are visible. You will need to complete that level to see the next one. Don’t worry if you go past this stage when logging on, the Mastery Challenges can be accessed from the Home page where it says DOVETAIL LIVE. It is important to note that you may only complete these Mastery Challenges if you are logged in to Dovetail Live. If you are not, then the game will not record any progress.