Every object can be placed in a matrix. Then since you can have many magnetic field objects you can setup a matrix of them and control them with a machine learning code library.
If its all possible at to achieve fusion. Then a complex solution is what you need. You get such a solution from a machine learning network. Algorithmically manipulating the parameters of the objects.
So the idea is that with a matrix of ?magnet field objects you can control fusion with 100% precision.