
admin:host-set-group( $config as element(configuration), $host-id as xs:unsignedLong, $value as xs:unsignedLong ) as element(configuration)
This function changes the group to which an existing host belongs to the newly specified value.
http://marklogic.com/xdmp/privileges/admin/host
http://marklogic.com/xdmp/privileges/admin/host/{id}
  xquery version "1.0-ml";
  import module namespace admin = "http://marklogic.com/xdmp/admin"
		  at "/MarkLogic/admin.xqy";
  let $config := admin:get-configuration()
  let $hostid := admin:host-get-id($config, xdmp:host-name())
  return
  admin:host-set-group($config, $hostid,
      admin:group-get-id($config, "Default"))
  (: returns the new configuration element -- use admin:save-configuration
     to save the changes to the configuration or pass the configuration
     to other Admin API functions to make other changes.  :)