Hi,
Did you watch the video at the following time frame (5:04)? An example is presented where the pilot node (at the center of the hole) is connected to all the nodes at the inner face of the hole. Using this example rigid and deformable behavior have been explained. Also, please see if the following link helps you:
Geometry Behaviors (ansys.com)
How to access the ANSYS Online Help

Regards,
Ashish Khemka