Domain Mapping under Tools is not showing

Hello ,
I have installed "Domain Mapping" Plugin , but when creating multi-sites , there is no options appearing for mapping Domain as other service provider showing an options for Domain Mapping under Tools section.
I have activate domain mapping plugin under network , move sunrise.php in wp-content folder and edit wp-cofig.php as well , uncomment sunrise on Lines , but still not appearing option for mapping a domain in users site.