You can include an instance of a team component from within a project. You can view, run, and adjust instance variables, but you can't edit them directly from the test.
They must be edited from within the team context to avoid accidentally breaking widely shared components.
You can use a project's environment variables as well as extend other environments. This includes inherited env vars from the top-level.
If you heavily utilize environment variables, extending them can increase complexity, so we added a quick way to view the env vars that will be applied to playback in the create test screen: