No, he trains players, individually or in groups, or the entire team at one time. He is training one or more players, not one or more "positions."
Yes, and players play positions so I dunno what the problem is. There are sooo many different ways to trian your team whether it be one position or two or team training and it is pretty easy to train players whether they are out of position or not.
The 11th and 12th player on the bench for the San Antonio Spurs may not get game minutes this week, but they train every bit as hard as the guys who get game minutes, maybe even harder because the guys getting game minutes have to take it easy in practice or get worn down.
Which is why I love scrimmages. You can get your lower players and reserves minutes and training. There are no scrimmages in the NBA, there are in BB, which is beneficial for the aspect of training.
I personally have no issues with the training, but I suppose I can see how training players out of position especially in higher leagues can be frustrating.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs