Simple Sales Commission Software Needed

Hi, I am looking for someone to build a automation template formula to manage commission scheme. My client is opening a shoe selling company. He wants to set a commission basic reward scheme. Example Salesman sell, ( tier 1 ) 1 quantity to 15 quantity/month gets X% commission ( tier 2 ) 16 to 50 gets/month Y commission ( tier 3 ) 51 to 120 /monthgets Z commision and then once they maintain in say tier 3 for 3 months, they get quarterly performance bonus and then once they maintain in say tier 3 for 4 quarters - they get additional yearly bonus That is individual salesman then 2nd type, reference commission 3rd type co sharing, principal salesman and secondary salesman 4th type , team lead over riding 5th type, commission to the company Thanks