When you click that Tracker Option button, you can create another meal plan category. Those people have created a category for their supplements, so they don't have to show up in breakfast, lunch or dinner. But they still had to add the actual supplement the same way I described below.
Hope that helps,
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford
"No matter how slow you go, you are still lapping everybody on the couch."