Thank you!!!!!

Hi there.
I want to ask the community if there is a "Subdivision plugin" for Sketchup Pro 2014.

Specifically, I mean what he does at 1:04 in this video.

https://www.youtube.com/watch?v=utVQror-BkQ

I downloaded the free Subdivision and Smooth plugin but whenever it always crashes...

Hello there.
I'm new to sketchUcation and this is my very first post.
After fiddling with Sketchup Pro 2014 for quite a while,
I still don't get how to make something like in the pictures attached.

Can someone please explain to me the steps to make something like this?
I tried sandbox and curviloft and it still doesn't feel right.

I apologize if this topic was already dealt with; I couldn't find it using the search function.

This is the actual SKP.

This is the actual SKP containing the object.