Hi @Stabilostick and thanks for answering so fast.

Yes the perfect scenario would be that each neighbour had each own credentials and, after login into iobroker, would see/aminister only the visualization/adapters of its own apartment.
The idea is to share the same iobroker installation among a lot of different users.

I have seen that iobroker allows user group configuration, but in the context of a apartment building, could each neighbour see/write its own adapters/instances/objects?
or should each neighbour install its own iobroker?

Kind regards from Madrid.