Simple constraint versus IK in Bongo 2.0: a clarification.

The use of Simple constraint versus IK- constraint can be confusing, especially in a robot arm like setup, where an end-effector is IK-constrained to a Simple-constrained moving object.
Some clarification.
More info on bongo.rhino3d.com/

[@HieuLEO8]

Thank you Luc. This video is very helpful.

[@ladritube]

Hieu LE
Thanks. Making it truly is my pleasure.

[@ladritube]

Seung Ae Yoo,
I think you missed the click on the scroll bar just after selecting 'Part of an IK chain' and 'Constraint' - at 4.27. The ‘Pivot Constraints’ section appears below the ‘Constraints and Joints’ section, out of the video’s frame . Hence a click on the scroll bar makes it emerge.