Kernrechtsfrage
Whether C., D. and E. had standing to appeal despite not being parties below
Extrahierter Entscheid
They could not challenge the cantonal judgment because they were not parties before the cantonal court and did not attack that finding.
Extrahierte Begründung
A party not participating below must still show a legally protected interest and that the prior refusal to recognize party status is challenged; this was absent here.