Apply Cesium JavaScript to own model

Hi, I am quite new to Cesium, I found that there are many JavaScript code that was created from Cesium already, how can I apply it to my own model?

For example apply this preset code to my own stories/model - Cesium Sandcastle

Thank you

Hi, you cannot add custom code to Cesium Stories. You have to create your own web app.

Follow these steps to get started: