Logged in as test user (FrankC)
After looking at Rita's profile, it seems the only differnce is that I don't have the add new post option on the author page.
It seems that "editor" is on all profiles and is meaningless.
I may have misunderstood what podrock said about a member list with a selection option. There is no such list on Rita's stuff and I can't see what value it would have.
Edit: I seems now the add new post option has disappeared frm Riya'author page. Maybe you are working on the system