Using plugin is extremely easy - you just have to open Roles tab on Project view page.
We will go step-by-step and explain every action and each interface element.
Open your main page and click on "Projects".
Click on "Roles" button to open Roles tab view.
Users are grouped by their role in the project. User name are clickable and lead to public profile page.
User Avatars were added to make distinguishing easier.