Account types for

This module is only concerned with user/role associations by design and does not interfere with the actual workings of the role/permission system. Additionally, I fail to see how the permissions page "admin/user/access" even could be filtered by account type since account types depend on roles and roles depend on permissions. In other words, permissions define roles, not the other way around, so account types, which restrict available roles have no interaction with permissions directly and shouldn't.

But perhaps I don't understand what you're getting at. Perhaps you could try to explain in more detail what you are trying to accomplish. However, I'm fairly certain that whatever it is you want should be a separate module.

I'm marking this as 'by design'.

As you say in the module page "If you have a ton of roles on your site this module aims to eliminate errors in assigning roles". Now, when I go to the admin/user/access page I have a similar problem: ton of roles and the need to eliminate errors. Having already grouped roles in Account Types, I thought that (next to every row in the page) one could specify the Account Type via drop down menu, so shadowing all "unapplicable" roles. However, being quite new to Drupal, it is not clear to me whether the existing grouping of user roles could be applied also to the admin/user/access page... if not then it should surely be in a separate module. If all this does not make any sense... it may stem from my little knowledge of Drupal. Thank you.