I am facing problem to create the sub navigation in Drupal? Basically this navigation created under of my own module. For example like my link is example.com/?q=abc/program/123.
So if you see the attachment then u will get understand that I want to add new tab [Program 3] under of program tag. So could u tell me how to do it.
Please check the Program [Red mark] and then Program1 [green]