This is the 10651st most frequent Russian word.
возникших
"Arisen" or "emerged."
Here, "возникшие" is used to describe questions that came up spontaneously during the discussion.
Все возникшие во время дискуссии вопросы были подробно обсуждены.
All the questions that arose during the discussion were thoroughly discussed.
In this sentence, "возникшие" specifies problems that occurred during the process of completing the task.
Проблемы, возникшие в процессе выполнения задания, требуют немедленного решения.
The problems that arose during the task execution require immediate resolution.
"Возникшие" here is used to modify 'разговоры' to indicate that these conversations started or appeared in the office.