Webinar question: can anyone share guidance to measure the dietary diversity for adolescents ?

Question arising from the webinar: 

Can anyone share guidance to measure the dietary diversity for adolescents ?

Professor Wafai Fawzi, one of the panelists on Day 2, already shared a link to information on the Global Diet Quality Score (GDQS), a new metric of diet quality appropriate for use in low- and middle-income countries: https://www.intake.org/

Any further sources of guidance are much appreciated.