Create repositories backed by either the Realtime Database or Firestore. Point-and-click interface should allow creation of special Firebase objects that can then be created/retrieved in the backend repository. See https://www.youtube.com/watch?v=1a9O67xg3l0 for how this might look.
Since Document Models and Collection Modules are single linkable items, a Model can be copy and pasted to duplicate it and link it to another Document/Collection in the same structure.
Create repositories backed by either the Realtime Database or Firestore. Point-and-click interface should allow creation of special Firebase objects that can then be created/retrieved in the backend repository. See https://www.youtube.com/watch?v=1a9O67xg3l0 for how this might look.