Our Teachers requested this feature so they can (in their words as relayed to me) do the big sis little sis and it makes it so much easier if they’re divided into 11 and under and 12 and up.
Also helps when we have 46 soloists and I can only submit the top 20 by age at a competition. I don’t want to make a mistake and submit someone who shouldn’t be going because they’re not truly the top 20 oldest