This is the 16118th most frequent Russian word.
размещавшейся
"Размещавшейся" means "that was located" or "that was situated" in English.
In this sentence, "размещавшейся" is used as a participle referring to the team that was stationed or located in the camp.
Команда размещавшейся в лагере готовилась к следующему походу.
The team located in the camp was preparing for the next hike.
Here, "размещавшейся" is used to describe the state of a company that had been situated in the building.
Она нашла документы в кабинете, ранее размещавшейся в этом здании компании.
She found documents in the office of a company that was previously located in this building.
The word "размещавшейся" is used to describe the placement of paintings on the walls of the gallery.