Board Thread:General Discussion/@comment-135.0.133.32-20180829002926/@comment-35188846-20180829005736

If you mean the one that's one each friend, that's the "favourite" button. If you click on it, it makes that friend a favourite and pulls them to beginning of your list. The favourites come first, in descending level order, then the rest of your friends also in descending order. You can turn it off by clicking on it again. A lot of us use them to pull friends who have special requests to the top of the list so we can gift them first.