open TELEMAC-MASCARET The mathematically superior suite of solvers

I probably learned how to build a 2d triangle model in bluekenue, but I have a problem with how to build a 3D model.

1. Can I model the 2d to 3d in bluekenue?
2. What data (files) do I need to add in the case of 2d modeling?
3. What else needs to be paid attention to on the edge issue?

Thank you very much for your help. It would be better if you could have a tutorial on this.