I can't find the constrains icon in the position panel

Hello, when I practiced on the Auto Layout Playground file, I saw the constraints icon in the position panel on this topic example. However, when I created an auto layout myself, there is no constraints icon in the position panel anymore. Then I clicked other auto layout practice examples on this file and there was no constraints icon as well. Can anyone tell me how to make this icon visible?

Auto layout playground: https://www.figma.com/design/9bOHuaPbYMjpKvbBgMKMQV/Auto-layout-playground?node-id=2411-1174&t=F7YExvtza1GpixXa-1