Rhino grasshopper dunes

Hello there, I’m really sick of trying to do this kind of surface, I need this kind of form for my job and I can’t find how to do this.
Do somebody know how can I do this form that is on the roof?

Hi Crey!
Welcome to this forum!
Please, carefully read here: Help Us Help You …it’s really really useful.

after that Help Us Help You , you might want to take a look at the following, which looks really similar to the shape you are trying to achieve (I believe the sections are the last and easiest step)