Only Host Administrators can add Aliases. 

• Log in to your Web Mail Interface as the Host Administrator (Primary Mail Account). 
• Click on the "Alias Administration" option at the bottom of the page. 
• Click on the "Add" button. 
• Choose Standard, List, or Program Alias.  Standard is used to redirect to another single e-mail address.  List is used to redirect incoming e-mail to several accounts listed one per line in the " Destination " box.  Program is used to redirect incoming e-mail to a program on your mail server (Special arrangements with SSI are required for this function {Program} to work).
• The most common alias type is Standard .  For this option simply type the full e-mail address you want the mail "redirected to" into the " destination " box.