Therefor you have to contact a QS-approved coordinator of your choice. He is your first point of contact and will advise you on all questions relating to the QS scheme: He will help you with the registration, organize the audits and arrange your participation.
A list of the QS coordinators, every for the scheme participation relevant guidelines and checklists as well as supporting documents, sample forms and further information can be found here. The current scale of fees can be found here.
Steps to a QS scheme participant - Producer