How to change pose of a 3d model and how to show only a certain part of that model?

Hello, I have a model from ready player me and I’ve uploaded it to a website
But it loads the entire model, I only want to show half of the body, How can I do that?

Here’s the model on my website

And here’s how I want it to be

I think this could be done by:

  • Cropping the model / or showing only the top part of it
  • Changing the pose of my model
    But I don’t know how to do so