Using quotes under "Leads"

I would like the ability to use “quotes” under leads, I am able to make the relationship (so quotes shows up under “leads”), but I have no clue how to add the field “leads” below the “account” and “contact” field (where I graps all the information of whom you are making a quote to)

Any advise?

Create a one to many from Leads to Quotes. It should add the relate field for the lead onto the Quote view, or show the field to be added in Admin -> Studio -> Quotes -> Layouts -> Edit View/Detail View.