AC Cobra > I set my settings as you did on the picture and my step saves and opens faster and is not fixed, but, I no longer have the constraints of assembly.
Is there a parameter that I forgot to check to keep the constraints?
No, nothing or more, a step is a neutral file, so no constraint.
The best way to show your boss how it works is to either make a video (answer from gt22) or share access to your screen (via video conference) via Microsoft teams, anydesk, teamviewer or other software and show him yourself.
For our part, we use Microdsoft Teams, with sharing of sound (headset + microphone) and screen and the possibility to let one of the 2 interlocutors have their hand on the mouse and to change along the way.
ok thank you all for your advice, I'll send him the step so he'll have control over all the elements and I'll send him a video of the assembly kinematics.