Both. When you join Slated you are asked to create a member profile page for yourself. Once you’ve done that, you can create a project profile page for your project by logging in to Slated, clicking on your avatar in the top right corner of the page, then clicking the “List new project” link in the drop down menu, which will then take you through the project submission process.
Once you’ve created your project profile page, you are the “admin” for that page, which means that you will be responsible for updating and maintaining the page, as well as managing any inquiries you might receive about your project through Slated.