Expander to the node which will open up a group

Hi,

I am looking for a group like this, which will have one or two master nodes and other nodes are child nodes.

Could you please tell me if you have samples for the picutes I have pasted?? Thanks in advance.

Single Master Node Expanded:

image

Single Master Node Collapsed:
image

Double Master Node Expanded:
image

Double Master Node Collapsed:
image

Please let me know if you need more information regarding this.

Looks pretty straight-forward. Do you run into any problems when you implement it?