Administrator is a user who have all rights except access to account settings by default. To let him set up an account (to add domains, to adjust email, to make integrations with payment systems, etc.) account owner should grant him relevant rights.
We've added many access levels to the platform, so you can configure your employees' rights to work in your account as flexibly as you need. Choose a set of available actions for your employees, hide confidential data, and customize the process as you want.