Good questions. I was about to explain it but I got myself confused too.
Force control is like a technique each persons creates for themselves and perfects it. Kayden taught jiwoo his force control so he’s able to pick some of his styles. The only thing that because jiwoo is a speed awakener his electricity power can never really be 100% like kayden but it will be good enough.
i think that's why many people want to get their hands on Kayden's force control. In the early chapters, like when they explain Shinwa group? everyone using wind is cuz they share the same or the dame variation of force control (if im not wrong)
What exactly is force control? Jiwoos power is speed, yet he's able to use what Kayden taught him with force control. Doesn't that mean that anyone's able to learn another power alongside their original or what? I've been thinking this over but