Learn Something New: How do I manage Projects?
Projects are designed to help you better organize your experiments across multiple sites (or different sections of large sites). Using Projects, you can group your experiments in ways that make sense for your organization. For example, if you run experiments on multiple domains, you can assign a unique project for each domain. You can also invite other users to collaborate on a project with you without allowing them complete access to your account.
The hierarchy of experiment organization looks like this: