Sales CRM Distributor accounts

While we have some dirext cusotmers, most of our deals are comming through sales partners, while we still have the names & contacts of their end cusotmers.
i am confused how to imlement it on the CRM. i dont have enough liecenses for all partners currently so this is no an optoin.
what will be the best way to define a sales partners , who has severl opportunites?