MediaPipeJS Pose Demo Project's UI with PoseNet (Multiple Poses)

I’m developing a basic real-time pose estimation project.
I came across the MediaPipe JS demo; I love this project’s UI and how well it’s made. The thing is I wanted to track multiple people in my project and afaik only PoseNetJS works like that.
So now I simply want to run this Mediapipe project’s UI with PoseNet js so I can track multiple people.
Any guidance or resources would be great!