This is the 5584th most frequent Russian word.
поставлены
"Поставлены" means "are placed" or "are set."
Here, 'поставлены' involves the placement of artistic elements (accents) within a creative work (the staging).
В постановке были поставлены яркие акценты.
Vivid accents were placed in the staging.
In this sentence, 'поставлены' means 'placed' or 'put', describing an action where items (books) were arranged onto a shelf.
Книги были поставлены на полку.
The books were placed on the shelf.
In this case, 'поставлены' refers to tasks being 'set' or 'assigned', implying responsibilities or challenges provided to someone.