Hi all, Can anyone help me to understand why is workbook used for within NetSuite?

Are you referring to the new reporting tool?

Yes exactly

It's a mix between Saved Searches and Reports. One of the highlights is that you're able to do multiple levels of joins.

But how to run it. I was bit confused about the pivot and chart?

and pivots!

Start by building a report in the new tool, and having it match with a saved search which you know is correct

Ok