Fine tuning ecloud account

I have two questions (/requests):

  1. there is the possibility to have a sub-categories in contacts? Theoretically, maybe yes (with /: i.e. friends/American, friends/German and so on, where American and German are sub-categories, sub-groups of “friends”, i.e. where all contacts in sub-categories belong also to parent folder), but in fact I find that contacts in “child” folder (subcategory) are not present in parent folder (category). Am I asking for something impossible?
  2. there is the possibility to have contacts groups (alphabetically) sorted (in browser - Nextcloud)? So far it seems impossible…
    Thank you