How to change the default specifications on a Class Diagram?

I would like to change some defaults on specifications panels on a Class Diagram. For example, on Attribute Specification panel the “Unique” box is set when we add a new attribute to a Class. I would like to modify this default to “not set”. This is a sample, I would like to modify several other defaults.
Is it possible? How?

Hi Marcelo,

The default value of certain model element properties can be set either via the Application Options or Project Options dialog pane. Both dialog pane has the Diagramming category, which is where the configuration of default model element properties lie. For class diagram related options, you may find them inside Class or Association tab. And I would suggest simply search for keyword of the option you want to find in the search field, if you cannot find the options, they are not yet supported.

Best Regards,