Need help blending surfaces on rhino or grasshopper

Hello everyone !

I have this model but I could like a smooth been between the columns and the roof, but I don’t know how I can do it. I tried but blending surfaces without grasshopper but it does not comme great.
Do you have any idea of how to do it ?

I have a visuel reference :
23c953cfd51093e57bbfbe5ce0cafd07
prepa mathilde 2.gh (254.4 KB)
prepa mathilde test.3dm (3.5 MB)

Do what thing exactly?

Can you post an image of what you are trying to achieve?

Your file shows this:

which does not seem to relate at all to the reference you’re showing us.

Best

well I will post the files again but I have something like this

And I would like this part to blend like if the column is in perfect continuity with the roof

prepa mathilde 2.gh (24.5 KB)
prepa mathilde test.3dm (3.3 MB)