Help how to use obi handle

[Richard]

Handles are simply transforms. If you want them to move together with a rigid body, you need to parent them under that rigidbody's transform. However they do not provide two-way coupling with rigid bodies, as explained here:
http://obi.virtualmethodstudio.com/tutor...ments.html

Quote from the Pin Constraints section:

If you want the rigidbody to react to the particles it is attached to, you need to use pin constraints instead of handles.

How can I select particles in that way? I would like to choose dozens.  And I cannot realize how to attach rigidbody.