This guide explains how to give a customer access to your Managed VPS, specifically to a single subscription/website.
Step 1. Click on the 'Clients' button in Plesk.
Step 2. Click on 'Add a Client.'
Here, you can provide a name and email address for the customer, and under the 'Access to Plesk' section, indicate how the customer can log in to Plesk.
Optionally, you can also create a subscription for your customer at this point. The details on this page are needed to establish a connection using SSH/SFTP.