My co-writer already registered our work. Do I need to do it as well?

To ensure you get your fair share, you must register the work too. This will also make it easier to find should you need to check or make any amendments to the work later. 

For the quickest way to register your works in the future, you'll find the Register/Amend works button on the homepage once you've logged in. Or on our Works page, which you can get to via Works in the top-bar navigation.