This is the 17241st most frequent Polish word.
zajmowanego
"Zajmowanego" means "occupied" or "being taken (up)."
In this sentence, 'zajmowanego' describes the position (stanowisko) being occupied or held, indicating possession or association.
Stanowisko zajmowanego przez niego było bardzo odpowiedzialne.
The position occupied by him was very responsible.
Here, 'zajmowanego' refers to the house (domu) that is occupied by the family, showing its current state of being used or inhabited.
W domu zajmowanego przez rodzinę zawsze panował ład.
In the house occupied by the family, there was always order.
In this case, 'zajmowanego' denotes the apartment (mieszkania) being occupied, specifying the action of living there by a person.