Create root folder of Gmail in Outlook

I am trying to use my Gmail account in Outlook via IMAP.
Whenever I do, I am getting a Gmail folder that consists of the entire system folders of Gmail.
My question is will it have any effect if I will try to make a subfolder and copy all the contents of Gmail’s system folders in it?
If it won’t cause any problem, how can I make or create a root folder for my Gmail account in Outlook?
Can anyone please send me some help?
Thank you.
