By adding an additional user, you grant access to another user to log into your hosting account.
To add a sub-user, log into the control panel and find "Manage Users"
Next, enter the desired username and password. You can grant full account access by checking "Full Access", or you can select specific sections that you want the sub-user to have access to.
When you finish filling out the form, click the "Create" button and that's it. The user will be able to log in with your created credentials from the same server address.