User Roles and Statuses

What do the different user statuses in ConfTool mean?
Can I add more statuses?

You find a list of all user statuses in ConfTool / ConfTool Pro at:
http://www.conftool.net/en/administrator_documentation/user_roles.html

You cannot add more user roles or statuses, but you can update options of some
of the statuses if you go to:
Settings =>
   Settings for the Registration of Users =>
   Main Setup for User Registration and Management

Furthermore you can combine the available statuses, this gives you many different options.