I did JS team training for a couple weeks when I had several players that I wanted to raise their shooting.
waste of time..you can train 2 position JS in 6 players with 48 mins..
I agree with that for almost all situations. But there can be times where you team train a skill. I had some league games where I needed to play some trainees at PG and PF since I was trying to win my league games and not play my players too much out of position. So I did a week of JS for the team.
There are some managers that do all team training and have had some success. But I think for the vast majority of managers, the best option is 1/2 position training.