With a recent release, we updated the Watchlist and TV Show Tracking section. You can now save titles not only to the Watchlist or track them with TV Show Tracking, but also to your own lists.
Find out more about custom lists
In case you prefer to still save movies to your Watchlist with one click: This still works, if you don’t have any custom lists. So when you have zero custom lists, the bookmark icon will save the movie straight to your Watchlist.