Motion Study: Fade Out

Hello

I am currently working with the SolidWorks motion study tool. I've already worked on it a lot with the 2011 version of SW. But since I have the 2019 SP5 version, I can no longer make elements appear and disappear in fade (like on the following video: https://www.youtube.com/watch?v=FKYRNcOzbNU&ab_channel=FILTRESMONNET)

I looked for a lot of options but impossible to find, my appearance and disappearance is instantaneous.

Thank you in advance for your help.

Hello

 

I had the same problem. I found the answer in this video from 3min 15s https://www.youtube.com/watch?v=PzbbM2RQ_ZM

 

Have a nice day