Add new properties to already existing class

Victor C. wrote on Wed, 16 December 2015 11:20
My question would be so : is it possible to set automatically a viewpoint element for each Physical Function (for example) created when the viewpoint is activated ?
When you say “Viewpoint Element”, you mean something like PartMass? That is possible. You would also need to make sure to automatically create the extension elements whenever you create a new PhysicalFunction.

Hello,
In the same way, I would like to know if it is possible to display attributes of the new class directly in its edit layer.
The following picture illustrate my need.
Thank you for your support.
Cheers,