The Ansible roles page is a part of the Ansible plugin and will only exist if this plugin is installed on your orcharhino.
The Ansible roles page can be accessed via the The Configure Menu:
Configure > Ansible > Roles
The Ansible roles page forms a part of orcharhino’s Ansible support. Ansible is one option for configuration management within orcharhino.
An Ansible role is a collection of tasks. Individual tasks describe a single state of affairs that Ansible should achieve when the task is run. Any Ansible roles that should be usable within orcharhino need to be imported first.