Well you have to load moves for both sides. And that is what makes it difficult.
You want to play a set of moves and your opponent gets to see what you have done and react to it.
You also get to see how they have reacted and you can make a different move than you had planned if the situation requires it.
How do I setup the board so I can practice a specific set of moves against the black chess pieces. I tried setting one up under analysis > setup position and saved it. I move my pieces, but the black pieces don't auto move after I load that specific saved game.