Profile Roles: Examples that show how the "Roles framework" related to the Profile Manager and Roles plug-ins is being used?

Can folks provide examples that show how the "Roles framework" related to the Profile Manager and Roles plug-ins is being used?

( Roles Plug-In https://elgg.org/plugins/847275 , Profile Manager Pug-In, https://elgg.org/plugins/385114 )