hello,

I'm new in this project and I want to develop new tools, objects...
I learned how to develop a simple plugin from the tutorial,
now my objective is to add a new personalized element (for exemple in room "chambre" ) also how to create
a new category like the folder "chambre" in the application ,
the problem is that I' cant find the part of code in which i make these changes ,
so i participate in this forum hoping to find assistance .

thank you in advance.