Here I am, back from vacations.
Yes, I see. It’s easy: You need a family that will be created in a list of points. You need to rise this logic by one dimension, so you will need A list of families that will be created in a list of lists of points. You can do this easily with different nodes, one for every family. Once you reach this goal you should try to put everything in one node, practicing with list logic. The scheme should be something like that:
You have a list of families (A…N) and a grid of points, that you can also see like a list of lines, right? (a1,a2,…an; b1, b2,…,bn; c1,c2,…,cn)
A a1, a2, a3, …, an
B b1, b2, b3, … , bn
Try and let me know!