Hierarchical starlike setup

Hello,

is it possible to use a starlike hierarchical setup (with just two levels: top-bottom).
Meaning:

  • there is a limited group at the top of the hierarchy that can send and receive to all
  • the bottom childs can send and receive only to the top level

Questions:

  • Is is possible to use something like this (straightforward)? Like meet.jit.si?
  • Or is this impossible?
  • (Or is the only option: install and set this up yourself? (videobridge?))