change clause number - procurement contracts

Hello

I created several clauses

they all get a number 1, 2, 3, 4

but when I create my contract template now

and eg I add

section eg  Introduction

        wiht underneath it eg clause 4

and I autonumber

--> it gives me  1. introduction

                       1.1.  4 intrdocuction of the customer

--> why is the clause number part of this numbering?

thanks

els