Create a customer as a reseller
Log in to the Plesk Admin interface. Go to Customers and click on Add customer, then you will be asked for the customer’s data. Enter it and create the login for the customer under Access to Plesk. Under Subscription you will be asked for the domain and have to specify an FTP access for the customer. As soon as all fields marked with * are filled in, you can click on OK and the customer has been registered.