GoJS process flow diagram With Drag & Drop

Can anyone give me an example of how we can create GoJS process flow diagram With Drag & Drop.
How to add link in nodes? Can anyone give me an example of how we can create GoJS productionProcess diagram With Drag & Drop?

I’m not sure what you want. Have you looked at the samples? GoJS Sample Diagrams for JavaScript and HTML, by Northwoods Software

Thanks. It helps me.