dmu kinematics - "change mode"

[brikksss]

Good morning to all,
I am following the tutorial to realize the handling of a rolling joint (dmu kinematics environment). the guide of the catia refers to the modality... from where it is activated?! I attached a screenshot of the part where the guide refers.

Thank you!

 

[brikksss]

I solved the problem... simply the guide intended to open the card of the imposed bond... thank you can close (or delete)