Use set unobserve 0 and follow partner . Pieces that a player has available to drop will be shown on the side of the board. Simply drag the piece from the side of the board to the square where you want to drop it. The latter gives some useful information about bughouse strategy. King safety becomes paramount.
Dropped pieces can lead to long, sacrificial attacks, almost out of nowhere.
Also, communication between partners is key. The team that can control the timing of exchanges will often win the game. The team that is ahead on the clock also has a strong advantage. To facilitate communcation, the ICC command ptell message will send message to your partner. Therefore, you have to guess where your opponent's pieces are, to plan your strategy.