When to play
Trivia works at a work party when it's loud, fast and played in teams. Everyone can see the board, nobody has to know sports, and the team that wins one round doesn't always win the next.
Put it after people have eaten and before the party splits into small groups. Around 30 to 40 minutes is right: one board of 25 clues, a short break, then a survey round to finish. Stop while people still want another round.
People are settled, fed and still in one room.
Right after the formal part, trivia gets the room loud again.