Change the display of players

Good afternoon! I have a question, I have cdj2000 nexus and djm 2000 nexus, I play on channel 2 and 3, the program has to display 4 players to see channel 2 and 3, is it possible to somehow configure the output in the program 1,2 and play on channel 2,3? Otherwise, it takes up a lot of space on the screen. And the second question is, is it normal that when I control one player, the track selection moves simultaneously on the second player? Recordbox 5.8.6