Confirm training

Can you ask for confirmation of training.
Or allow switching off ticking players I.e. Select them all
I am seriously hacked off by accidently sending a couple of players training for a few hours rather than the whole squad!
Happens while trying to increase health of adding training points
Dude seriously. I've been playing this game for 3 weeks n figured that out in a couple of days. You can select a few players or you can select the whole squad have a good look at the training screen you will work it out