If by "feature" you meant highlighting a project on your profile, you can do this directly on the Scratch Website: Navigate to your page. Hover over the large project box in the center.
Users often "prepare" these files for specific secondary features or external tools: Scratch Project.sb3
: Platforms like LearningML allow you to save Scratch models within the .sb3 file for future AI-driven sessions. Managing a "Featured Project" If by "feature" you meant highlighting a project