New email addresses can be created in your Control Panel.
Log into the Control Panel
Click on the ‘Mail Boxes’ icon in the ‘Email’
You will see the “Add a New Mail Box” section.  Just type the email address you want and click “add”
The new email address will be created with a strong password.  You can over-type the password but do not use a simple password.
The email will take a while before it becomes live and ready to be used.  You can test if it is active yet via webmail.