Parenting a shape node to multi transform node

Maya
1

Hello,
Can any one tell me how to parenting a shape node of  a curve to multi transform node? When ever I will select any transform node the same shape node I can see under it.

2

example :

http://thnkr.com/wiki/index.php?title=Make\_an\_icon\_shape\_node\_and\_group\_it\_under\_a\_transform