To senators, giving the floor, he or she just keep seat.

至于参议员们, 只要点个头，他或她就会保住席位。

Perhaps you could suggest another way of giving the floor to people without interruption?

或许你可以提出另一种让人们发言而且不被打断的方法？

Or maybe, you may give the floor to him and keep listening as if very interested.

或者，干脆让他说，你在一旁装出一副很聆听的样子。