Yes, role-based access is fully configurable. Please open the plugin General Settings and go to the Permissions section. There you can define which user roles are allowed to use the duplication features.
Make sure that the required permissions are enabled for the Editor role (or any other role you’re using). For example, it’s possible that duplication is currently enabled only for Administrators. After updating the permissions, save the settings and reload the posts list. The Clone option should then be visible for users with the appropriate role.