Complex sentence: This was basically a finger on the buzzer round were the team captains were asked questions and whoever buzzed in and gave a correct answer scored the points if not the question was offered to the other teams.
Split into simpler sentences: This was basically a'finger on the buzzer' round were the team captains were asked questions and whoever buzzed in and gave a correct answer scored the points. An incorrect answer meant the question was offered to the other teams.