Selecting and Installing a "class user" plug-in on Wordpress (menu customited for class user)

Modify the SSO functionality in Wordpress integrating class user “menu” installing a WP plug-in a. During registration user must specify a class: i. Customer ii. Professional iii. Training Company b. When user log-in a custom menu is shown for each class (in Italian and English) c. each menu button should point to an external link depending on the function: [login to view URL] e. A super-user (me) working in the back end must be able to: i. Create other class user ii. Customize their menu (in Italian and English) SEE ENCLOSED DOC FOR DETAILS