You can concentrate training on only 1 drill. Quimbamba for example could be trained with long run to push up fitness and speed only. Eventually these skills will stop making gains if the other skills are "relatively" low in comparison. The thing is, because of recent changes to training, we don't know at what point gains will stop.
The player you showed in the photo, Quimbamba, could be trained using all drills apart from the attacking ones, and he should progress well towards becoming a six star player.