Editing mullion joins profile

how can i edit the join profile of curtain wall mullion?

for my project i am using curtain wall as wood framed wall. and i need to show frame joins, but i can not change the join profile.
check out the attachments. the blue lines are how i want it to show, is there any way or workaround for this in dynamo ? … i really need help ,
i have no experience in dynamo, but i would love to give it a try if there is any possibilities to achieve this,

As far as I know, that isn’t something which Revit curtain wall mullions can do.

You will likely be better suited to utilize parts which can be more directly edited in such a fashion.