Good evening. im just new on plugin development on wordpress. i just succesfully create plugin admin page. i want to create new page and sub menu just like the sub menu of cformsII.. how can i do that ? see the image tnx..
http://i946.photobucket.com/albums/ad310/besingamk/ScreenShot2014-01-16at61049PM_zps65d0a8fb.png