Singapore Airlines has four boarding groups. Further, the airline divides this into different groups to make passenger entry smooth and efficient at the airport. Moreover, passengers are allotted to the Singapore Airlines Boarding Groups based on the ticket type or their membership status. Besides this, those who are unaccompanied minors or need special assistance get a boarding pass prior to these four groups. For more details about boarding groups, visit the official website of Singapore Airlines or read the blog at the mentioned link.