I'm not really clear about your question is. From the little I can understand you want to open a locate affiliate agency. Do you want to open it online or offline? If you want to open it offline, you will need to go the local process of opening a business which is registration and getting licenses. If you want to open one online you can just trading if you have the business. To keep it professional you can go through the same process as opening a store offline. You also need to look for products that you will act as an affiliate for and register with an affiliate company.