First of all, you have to add your Company, your Project and set up a payment method compatible with automatic marketplace payments on Mypay dashboard. 

The next step is to create multiple vendors under your merchant account.  On Marketplace services, more vendors mean more earning for everyone. You have more products in your market – thus more people visit and more sales will happen. 

In order to do this step, you have to click on Marketplace tab on the left of your dashboard screen