as far as I can understand I can associate a contract with monthly invoicing to a sales person.

Is it possible to automatically pay to the sales person a percentage of the invoice associated to him? 

In other words let's assume that John is a sales person that closed a contract that cost to the Customer Jack 100$/month.

I need to understand if I can automatically invoice Jack 100$/month and pay 10% (10$) to Jack.

tks,

pippo