Solution
Adding a step to your favorites help you to locate important or useful steps faster. When viewing the main content of a lab, hover the mouse over the step tab that you want to add to your favorites in the navigation bar. A pop-up description with the title of the step and three icons should appear. Click the bookmark icon, which is the first one from the right. As a blue bookmark appears at the top left corner of the step number tab, the step has been added to your favorites.