Adding an up-to-top button for a specific section

The community member is looking for the easiest way to add an up-to-top button that scrolls to the top of a specific section, not the entire page. In the comments, another community member suggests adding an id to the target section and using that as the link for the button. Another community member asks how to control when the button appears and disappears, and a third community member recommends listening to the scroll event and calculating the offset from the top to determine when the button should be visible.