I’m using the Mechanical Designer role on 3DEXPERIENCE and evaluating the Change Action process.

When I open an affected part from a Change Action, I don’t see the “Work Under Change” option to associate my design modifications with the Change Action.

Is there an option available in the CATIA 3DEXPERIENCE user interface to modify a part under a Change Action? If so, where can I find it?

Any guidance or documentation would be appreciated. 
Thanks!