Enable Thread create and connect to custom user roles
In Thread comments settings you can assign the create/connect thread ability to the Editor and Author roles. Use this filter to add your own custom roles to the settings page:

/**
* Grant create/connect thread ability to custom
* user roles.
*
* @since 1.0
*/
function child_theme_xfwp_comments_roles( $roles ) {
$roles[] = 'role';
return $roles;
}
add_filter( 'xfwp_comments_roles', 'child_theme_xfwp_comments_roles' );