In wiki-csi america I found what I was looking for:
I share the link
https://wiki.csiamerica.com/display/tutorials/Modeling+simply+supported+shells#Modelingsimplysupportedshells-Approach1-assigningreleasestoshellelements
Hi friends
I am designing a mixed steel floor ( steel beams supporting prefabricated slabs). I want to apply the Sap 2000 "edge moment release" options. Does anybody have any example or clue on how to applied these moment releases in a slab in SAP 2000?. I looked in Watch and learn and google...
