How do I modify an existing object to add more faces.

Does Probuilder have the ability to change an objects type (E.g. Cube to Cylinder) after it's created?

E.g. I want to modify an existing object, say a six sided cylinder to now have eight sides. Is this possible or do I have recreate the object from scratch.

I am using Unity 2019.

Thanks

 

Easier from scratch.

You could add 2 more faces (click on top edge, shift click on bottom edge, ctrl E). And then moving each and every vertical edge line. But that'd be a pain.