Learn more about the Settings > Roles section:
Roles are used to manage user access, permissions, and responsibilities within Torii. Hovering over an entry in the Roles list will expose buttons to view or change the permissions of that role in Torii. Roles that you have created will be editable and can be deleted.
Each scope can be set to "View only", "Take action", or "No access"
See Introduction to Roles-Based Access Control (RBAC) article for an overview.