Open a game on Chess.com
Make sure you are playing a time-control game that allows premoves
Drag or click your intended move before it is your turn
If premoves are enabled, Chess.com will queue the move automatically
Wait for your opponent’s move to see if the premove executes
To change a premove, make a different move before your opponent moves
To cancel a premove, move your piece back or make another move
In settings, check that premoves are turned on if they are not working
Use premoves only when the move is legal in the resulting position