I was able to customize the relations of an element in Smart Manipulator but I also want to change the type of diagram that is shown in the Smart Manipulator 
https://docs.nomagic.com/display/MD190/Creating+new+diagram+type

The information in this page only tells how to specify the relations to an element but no mention of Diagram 

The image shows the activity diagram 

What if i want to show a customized diagram in it's place 

I even tried to find the Action Manager Configurator that responsible for smart Manipulator but unable to find the information regarding it (from Open API Documents) 

please let me know any information that can help me 

Thank you