How to Create the Nested drag and drop using Ignite UI Drag and Drop

[dharmarajmr]

I'm facing issue when I have decided to create the nested drag and drop. Those features are available in drag n drop ignite UI component.

This is the below sample that you provided in stackblitz

https://stackblitz.com/github/IgniteUI/igniteui-live-editing-samples/tree/master/angular-demos/interactions/kanban-sample?file=src%2Fapp%2Fdrag-drop%2Fkanban-sample%2Fkanban-sample.component.ts

but I have to drag the ToDo and Progress and Done article as well. What Should I do?, Thanks