Keycloak Authorise subgroup users specific Admin permissions

I am currently facing a problem with Keycloak. I have Groups with Subgroups. In some of these Subgroups are users who need to have access to edit user in their subgroup, but I can only give them access to edit all User or let them see all. Visualised below:

members:
  Super Admins
subgroups:
  group 1:
   members:
    Admin
   subgroups:
    group A:
     members:
      user
    group B:
  group 2:
   members:
    Admin
   subgroups:
    group C:
    group D:
     members:
      user

I am not able to create new Realms for the Subgroups so that there are encapsulated. How can I Limit the view of the subgroup Admin, so he can only see his subgroups and users within?

Is anyone facing the same problem ?